diff --git a/src/cdk/a11y/key-manager/tree-key-manager.ts b/src/cdk/a11y/key-manager/tree-key-manager.ts
index 1e4bfa2a4122..3ab2715593f7 100644
--- a/src/cdk/a11y/key-manager/tree-key-manager.ts
+++ b/src/cdk/a11y/key-manager/tree-key-manager.ts
@@ -411,7 +411,11 @@ export class TreeKeyManager<T extends TreeKeyManagerItem> implements TreeKeyMana
   }
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function TREE_KEY_MANAGER_FACTORY<T extends TreeKeyManagerItem>(): TreeKeyManagerFactory<T> {
   return (items, options) => new TreeKeyManager(items, options);
 }
@@ -422,7 +426,11 @@ export const TREE_KEY_MANAGER = new InjectionToken<TreeKeyManagerFactory<any>>('
   factory: TREE_KEY_MANAGER_FACTORY,
 });
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const TREE_KEY_MANAGER_FACTORY_PROVIDER = {
   provide: TREE_KEY_MANAGER,
   useFactory: TREE_KEY_MANAGER_FACTORY,
diff --git a/src/cdk/a11y/live-announcer/live-announcer-tokens.ts b/src/cdk/a11y/live-announcer/live-announcer-tokens.ts
index a95cb1c861f3..8294bb4a7144 100644
--- a/src/cdk/a11y/live-announcer/live-announcer-tokens.ts
+++ b/src/cdk/a11y/live-announcer/live-announcer-tokens.ts
@@ -22,7 +22,11 @@ export const LIVE_ANNOUNCER_ELEMENT_TOKEN = new InjectionToken<HTMLElement | nul
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY(): null {
   return null;
 }
diff --git a/src/cdk/bidi/dir-document-token.ts b/src/cdk/bidi/dir-document-token.ts
index 421ef9d604c5..42cf9f8267e0 100644
--- a/src/cdk/bidi/dir-document-token.ts
+++ b/src/cdk/bidi/dir-document-token.ts
@@ -29,7 +29,11 @@ export const DIR_DOCUMENT = new InjectionToken<Document>('cdk-dir-doc', {
   factory: DIR_DOCUMENT_FACTORY,
 });
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function DIR_DOCUMENT_FACTORY(): Document {
   return inject(DOCUMENT);
 }
diff --git a/src/cdk/overlay/overlay-directives.ts b/src/cdk/overlay/overlay-directives.ts
index a7933dc59a06..d03108836781 100644
--- a/src/cdk/overlay/overlay-directives.ts
+++ b/src/cdk/overlay/overlay-directives.ts
@@ -457,14 +457,22 @@ export class CdkConnectedOverlay implements OnDestroy, OnChanges {
   }
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER_FACTORY(
   overlay: Overlay,
 ): () => RepositionScrollStrategy {
   return () => overlay.scrollStrategies.reposition();
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER = {
   provide: CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY,
   deps: [Overlay],
diff --git a/src/material-luxon-adapter/adapter/luxon-date-adapter.ts b/src/material-luxon-adapter/adapter/luxon-date-adapter.ts
index 58296201a97d..c465fd8d45a1 100644
--- a/src/material-luxon-adapter/adapter/luxon-date-adapter.ts
+++ b/src/material-luxon-adapter/adapter/luxon-date-adapter.ts
@@ -45,7 +45,11 @@ export const MAT_LUXON_DATE_ADAPTER_OPTIONS = new InjectionToken<MatLuxonDateAda
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_LUXON_DATE_ADAPTER_OPTIONS_FACTORY(): MatLuxonDateAdapterOptions {
   return {
     useUtc: false,
diff --git a/src/material-moment-adapter/adapter/moment-date-adapter.ts b/src/material-moment-adapter/adapter/moment-date-adapter.ts
index 81105fb70a0b..cbf303d33958 100644
--- a/src/material-moment-adapter/adapter/moment-date-adapter.ts
+++ b/src/material-moment-adapter/adapter/moment-date-adapter.ts
@@ -44,7 +44,11 @@ export const MAT_MOMENT_DATE_ADAPTER_OPTIONS = new InjectionToken<MatMomentDateA
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_MOMENT_DATE_ADAPTER_OPTIONS_FACTORY(): MatMomentDateAdapterOptions {
   return {
     useUtc: false,
diff --git a/src/material/autocomplete/autocomplete-trigger.ts b/src/material/autocomplete/autocomplete-trigger.ts
index d9334f84c499..f0b9adf76301 100644
--- a/src/material/autocomplete/autocomplete-trigger.ts
+++ b/src/material/autocomplete/autocomplete-trigger.ts
@@ -93,12 +93,20 @@ export const MAT_AUTOCOMPLETE_SCROLL_STRATEGY = new InjectionToken<() => ScrollS
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy {
   return () => overlay.scrollStrategies.reposition();
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY_PROVIDER = {
   provide: MAT_AUTOCOMPLETE_SCROLL_STRATEGY,
   deps: [Overlay],
diff --git a/src/material/autocomplete/autocomplete.ts b/src/material/autocomplete/autocomplete.ts
index 705b08879fb5..52f6a90a897f 100644
--- a/src/material/autocomplete/autocomplete.ts
+++ b/src/material/autocomplete/autocomplete.ts
@@ -86,7 +86,11 @@ export const MAT_AUTOCOMPLETE_DEFAULT_OPTIONS = new InjectionToken<MatAutocomple
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY(): MatAutocompleteDefaultOptions {
   return {
     autoActiveFirstOption: false,
diff --git a/src/material/button-toggle/button-toggle.ts b/src/material/button-toggle/button-toggle.ts
index 8ccdbce0ad52..de0f00535e2a 100644
--- a/src/material/button-toggle/button-toggle.ts
+++ b/src/material/button-toggle/button-toggle.ts
@@ -77,6 +77,11 @@ export const MAT_BUTTON_TOGGLE_DEFAULT_OPTIONS = new InjectionToken<MatButtonTog
   },
 );
 
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_BUTTON_TOGGLE_GROUP_DEFAULT_OPTIONS_FACTORY(): MatButtonToggleDefaultOptions {
   return {
     hideSingleSelectionIndicator: false,
diff --git a/src/material/button/fab.ts b/src/material/button/fab.ts
index ce8dcb200352..eeb051153cba 100644
--- a/src/material/button/fab.ts
+++ b/src/material/button/fab.ts
@@ -40,7 +40,11 @@ export const MAT_FAB_DEFAULT_OPTIONS = new InjectionToken<MatFabDefaultOptions>(
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_FAB_DEFAULT_OPTIONS_FACTORY(): MatFabDefaultOptions {
   return {
     // The FAB by default has its color set to accent.
diff --git a/src/material/checkbox/checkbox-config.ts b/src/material/checkbox/checkbox-config.ts
index 70ed060f00dd..db8ff0ab9e55 100644
--- a/src/material/checkbox/checkbox-config.ts
+++ b/src/material/checkbox/checkbox-config.ts
@@ -35,7 +35,11 @@ export const MAT_CHECKBOX_DEFAULT_OPTIONS = new InjectionToken<MatCheckboxDefaul
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_CHECKBOX_DEFAULT_OPTIONS_FACTORY(): MatCheckboxDefaultOptions {
   return {
     color: 'accent',
diff --git a/src/material/core/datetime/date-adapter.ts b/src/material/core/datetime/date-adapter.ts
index 08bb8be38078..fd995894afbd 100644
--- a/src/material/core/datetime/date-adapter.ts
+++ b/src/material/core/datetime/date-adapter.ts
@@ -15,7 +15,11 @@ export const MAT_DATE_LOCALE = new InjectionToken<{}>('MAT_DATE_LOCALE', {
   factory: MAT_DATE_LOCALE_FACTORY,
 });
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_DATE_LOCALE_FACTORY(): {} {
   return inject(LOCALE_ID);
 }
diff --git a/src/material/datepicker/date-range-selection-strategy.ts b/src/material/datepicker/date-range-selection-strategy.ts
index 7e11d83dfcb9..c9beeaa14a6e 100644
--- a/src/material/datepicker/date-range-selection-strategy.ts
+++ b/src/material/datepicker/date-range-selection-strategy.ts
@@ -131,7 +131,11 @@ export class DefaultMatCalendarRangeStrategy<D> implements MatDateRangeSelection
   }
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_CALENDAR_RANGE_STRATEGY_PROVIDER_FACTORY(
   parent: MatDateRangeSelectionStrategy<unknown>,
   adapter: DateAdapter<unknown>,
@@ -139,7 +143,11 @@ export function MAT_CALENDAR_RANGE_STRATEGY_PROVIDER_FACTORY(
   return parent || new DefaultMatCalendarRangeStrategy(adapter);
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_CALENDAR_RANGE_STRATEGY_PROVIDER: FactoryProvider = {
   provide: MAT_DATE_RANGE_SELECTION_STRATEGY,
   deps: [[new Optional(), new SkipSelf(), MAT_DATE_RANGE_SELECTION_STRATEGY], DateAdapter],
diff --git a/src/material/datepicker/date-selection-model.ts b/src/material/datepicker/date-selection-model.ts
index 31ba72b62f0c..967294f68527 100644
--- a/src/material/datepicker/date-selection-model.ts
+++ b/src/material/datepicker/date-selection-model.ts
@@ -211,7 +211,11 @@ export class MatRangeDateSelectionModel<D> extends MatDateSelectionModel<DateRan
   }
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY(
   parent: MatSingleDateSelectionModel<unknown>,
   adapter: DateAdapter<unknown>,
@@ -222,6 +226,8 @@ export function MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY(
 /**
  * Used to provide a single selection model to a component.
  * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
  */
 export const MAT_SINGLE_DATE_SELECTION_MODEL_PROVIDER: FactoryProvider = {
   provide: MatDateSelectionModel,
@@ -229,7 +235,11 @@ export const MAT_SINGLE_DATE_SELECTION_MODEL_PROVIDER: FactoryProvider = {
   useFactory: MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY,
 };
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_RANGE_DATE_SELECTION_MODEL_FACTORY(
   parent: MatSingleDateSelectionModel<unknown>,
   adapter: DateAdapter<unknown>,
@@ -240,6 +250,8 @@ export function MAT_RANGE_DATE_SELECTION_MODEL_FACTORY(
 /**
  * Used to provide a range selection model to a component.
  * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
  */
 export const MAT_RANGE_DATE_SELECTION_MODEL_PROVIDER: FactoryProvider = {
   provide: MatDateSelectionModel,
diff --git a/src/material/datepicker/datepicker-base.ts b/src/material/datepicker/datepicker-base.ts
index c7504bf6db8f..230e0d8e69f1 100644
--- a/src/material/datepicker/datepicker-base.ts
+++ b/src/material/datepicker/datepicker-base.ts
@@ -88,7 +88,11 @@ export const MAT_DATEPICKER_SCROLL_STRATEGY = new InjectionToken<() => ScrollStr
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_DATEPICKER_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy {
   return () => overlay.scrollStrategies.reposition();
 }
@@ -99,7 +103,11 @@ export type DatepickerDropdownPositionX = 'start' | 'end';
 /** Possible positions for the datepicker dropdown along the Y axis. */
 export type DatepickerDropdownPositionY = 'above' | 'below';
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_DATEPICKER_SCROLL_STRATEGY_FACTORY_PROVIDER = {
   provide: MAT_DATEPICKER_SCROLL_STRATEGY,
   deps: [Overlay],
diff --git a/src/material/icon/icon-registry.ts b/src/material/icon/icon-registry.ts
index 004a74060d93..32e5e59c5b43 100644
--- a/src/material/icon/icon-registry.ts
+++ b/src/material/icon/icon-registry.ts
@@ -728,7 +728,11 @@ export class MatIconRegistry implements OnDestroy {
   }
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function ICON_REGISTRY_PROVIDER_FACTORY(
   parentRegistry: MatIconRegistry,
   httpClient: HttpClient,
@@ -739,7 +743,11 @@ export function ICON_REGISTRY_PROVIDER_FACTORY(
   return parentRegistry || new MatIconRegistry(httpClient, sanitizer, document, errorHandler);
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const ICON_REGISTRY_PROVIDER = {
   // If there is already an MatIconRegistry available, use that. Otherwise, provide a new one.
   provide: MatIconRegistry,
diff --git a/src/material/icon/icon.ts b/src/material/icon/icon.ts
index 24e8d0be78d6..2831cf559252 100644
--- a/src/material/icon/icon.ts
+++ b/src/material/icon/icon.ts
@@ -65,7 +65,11 @@ export interface MatIconLocation {
   getPathname: () => string;
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_ICON_LOCATION_FACTORY(): MatIconLocation {
   const _document = inject(DOCUMENT);
   const _location = _document ? _document.location : null;
diff --git a/src/material/menu/menu-trigger.ts b/src/material/menu/menu-trigger.ts
index a9c2ce84171d..82a57db40c1a 100644
--- a/src/material/menu/menu-trigger.ts
+++ b/src/material/menu/menu-trigger.ts
@@ -60,12 +60,20 @@ export const MAT_MENU_SCROLL_STRATEGY = new InjectionToken<() => ScrollStrategy>
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_MENU_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy {
   return () => overlay.scrollStrategies.reposition();
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_MENU_SCROLL_STRATEGY_FACTORY_PROVIDER = {
   provide: MAT_MENU_SCROLL_STRATEGY,
   deps: [Overlay],
diff --git a/src/material/menu/menu.ts b/src/material/menu/menu.ts
index 0d3a13d836c7..94ac23c85498 100644
--- a/src/material/menu/menu.ts
+++ b/src/material/menu/menu.ts
@@ -82,7 +82,11 @@ export const MAT_MENU_DEFAULT_OPTIONS = new InjectionToken<MatMenuDefaultOptions
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_MENU_DEFAULT_OPTIONS_FACTORY(): MatMenuDefaultOptions {
   return {
     overlapTrigger: false,
diff --git a/src/material/paginator/paginator-intl.ts b/src/material/paginator/paginator-intl.ts
index 9be97a728a80..94a187c59554 100644
--- a/src/material/paginator/paginator-intl.ts
+++ b/src/material/paginator/paginator-intl.ts
@@ -58,12 +58,20 @@ export class MatPaginatorIntl {
   };
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_PAGINATOR_INTL_PROVIDER_FACTORY(parentIntl: MatPaginatorIntl) {
   return parentIntl || new MatPaginatorIntl();
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_PAGINATOR_INTL_PROVIDER = {
   // If there is already an MatPaginatorIntl available, use that. Otherwise, provide a new one.
   provide: MatPaginatorIntl,
diff --git a/src/material/progress-bar/progress-bar.ts b/src/material/progress-bar/progress-bar.ts
index bcaa9e4af0c3..856881dcc635 100644
--- a/src/material/progress-bar/progress-bar.ts
+++ b/src/material/progress-bar/progress-bar.ts
@@ -70,7 +70,11 @@ export interface MatProgressBarLocation {
   getPathname: () => string;
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_PROGRESS_BAR_LOCATION_FACTORY(): MatProgressBarLocation {
   const _document = inject(DOCUMENT);
   const _location = _document ? _document.location : null;
diff --git a/src/material/progress-spinner/progress-spinner.ts b/src/material/progress-spinner/progress-spinner.ts
index 89eec823123d..164e684c68a4 100644
--- a/src/material/progress-spinner/progress-spinner.ts
+++ b/src/material/progress-spinner/progress-spinner.ts
@@ -52,7 +52,11 @@ export const MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS =
     factory: MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS_FACTORY,
   });
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS_FACTORY(): MatProgressSpinnerDefaultOptions {
   return {diameter: BASE_SIZE};
 }
diff --git a/src/material/radio/radio.ts b/src/material/radio/radio.ts
index 1478434860eb..48d7e98a992a 100644
--- a/src/material/radio/radio.ts
+++ b/src/material/radio/radio.ts
@@ -98,6 +98,11 @@ export const MAT_RADIO_DEFAULT_OPTIONS = new InjectionToken<MatRadioDefaultOptio
   },
 );
 
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_RADIO_DEFAULT_OPTIONS_FACTORY(): MatRadioDefaultOptions {
   return {
     color: 'accent',
diff --git a/src/material/select/select.ts b/src/material/select/select.ts
index 8b851c65b372..b4607dd63b13 100644
--- a/src/material/select/select.ts
+++ b/src/material/select/select.ts
@@ -103,7 +103,11 @@ export const MAT_SELECT_SCROLL_STRATEGY = new InjectionToken<() => ScrollStrateg
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_SELECT_SCROLL_STRATEGY_PROVIDER_FACTORY(
   overlay: Overlay,
 ): () => ScrollStrategy {
@@ -140,7 +144,11 @@ export interface MatSelectConfig {
 /** Injection token that can be used to provide the default options the select module. */
 export const MAT_SELECT_CONFIG = new InjectionToken<MatSelectConfig>('MAT_SELECT_CONFIG');
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_SELECT_SCROLL_STRATEGY_PROVIDER = {
   provide: MAT_SELECT_SCROLL_STRATEGY,
   deps: [Overlay],
diff --git a/src/material/sidenav/drawer.ts b/src/material/sidenav/drawer.ts
index 59b4f0aa3e73..77c3f691fc99 100644
--- a/src/material/sidenav/drawer.ts
+++ b/src/material/sidenav/drawer.ts
@@ -78,7 +78,11 @@ export const MAT_DRAWER_DEFAULT_AUTOSIZE = new InjectionToken<boolean>(
  */
 export const MAT_DRAWER_CONTAINER = new InjectionToken('MAT_DRAWER_CONTAINER');
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_DRAWER_DEFAULT_AUTOSIZE_FACTORY(): boolean {
   return false;
 }
diff --git a/src/material/snack-bar/snack-bar.ts b/src/material/snack-bar/snack-bar.ts
index 80031dbe5469..b7c2dd348de0 100644
--- a/src/material/snack-bar/snack-bar.ts
+++ b/src/material/snack-bar/snack-bar.ts
@@ -26,7 +26,11 @@ import {MatSnackBarRef} from './snack-bar-ref';
 import {ComponentPortal, TemplatePortal} from '@angular/cdk/portal';
 import {takeUntil} from 'rxjs/operators';
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY(): MatSnackBarConfig {
   return new MatSnackBarConfig();
 }
diff --git a/src/material/sort/sort-header-intl.ts b/src/material/sort/sort-header-intl.ts
index 3e91e46f0f2e..a8b666831890 100644
--- a/src/material/sort/sort-header-intl.ts
+++ b/src/material/sort/sort-header-intl.ts
@@ -22,12 +22,20 @@ export class MatSortHeaderIntl {
   readonly changes: Subject<void> = new Subject<void>();
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_SORT_HEADER_INTL_PROVIDER_FACTORY(parentIntl: MatSortHeaderIntl) {
   return parentIntl || new MatSortHeaderIntl();
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_SORT_HEADER_INTL_PROVIDER = {
   // If there is already an MatSortHeaderIntl available, use that. Otherwise, provide a new one.
   provide: MatSortHeaderIntl,
diff --git a/src/material/stepper/stepper-intl.ts b/src/material/stepper/stepper-intl.ts
index d3b9c610f834..436fdeb883aa 100644
--- a/src/material/stepper/stepper-intl.ts
+++ b/src/material/stepper/stepper-intl.ts
@@ -28,12 +28,20 @@ export class MatStepperIntl {
   editableLabel: string = 'Editable';
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_STEPPER_INTL_PROVIDER_FACTORY(parentIntl: MatStepperIntl) {
   return parentIntl || new MatStepperIntl();
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_STEPPER_INTL_PROVIDER = {
   provide: MatStepperIntl,
   deps: [[new Optional(), new SkipSelf(), MatStepperIntl]],
diff --git a/src/material/tabs/ink-bar.ts b/src/material/tabs/ink-bar.ts
index d742222b98f9..cadbee81ec08 100644
--- a/src/material/tabs/ink-bar.ts
+++ b/src/material/tabs/ink-bar.ts
@@ -192,6 +192,8 @@ export interface _MatInkBarPositioner {
 /**
  * The default positioner function for the MatInkBar.
  * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
  */
 export function _MAT_INK_BAR_POSITIONER_FACTORY(): _MatInkBarPositioner {
   const method = (element: HTMLElement) => ({
diff --git a/src/material/tooltip/tooltip.ts b/src/material/tooltip/tooltip.ts
index 12259a2b9956..49d45af9d9d5 100644
--- a/src/material/tooltip/tooltip.ts
+++ b/src/material/tooltip/tooltip.ts
@@ -87,19 +87,31 @@ export const MAT_TOOLTIP_SCROLL_STRATEGY = new InjectionToken<() => ScrollStrate
   },
 );
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy {
   return () => overlay.scrollStrategies.reposition({scrollThrottle: SCROLL_THROTTLE_MS});
 }
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export const MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY_PROVIDER = {
   provide: MAT_TOOLTIP_SCROLL_STRATEGY,
   deps: [Overlay],
   useFactory: MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY,
 };
 
-/** @docs-private */
+/**
+ * @docs-private
+ * @deprecated No longer used, will be removed.
+ * @breaking-change 21.0.0
+ */
 export function MAT_TOOLTIP_DEFAULT_OPTIONS_FACTORY(): MatTooltipDefaultOptions {
   return {
     showDelay: 0,
diff --git a/tools/public_api_guard/cdk/a11y.md b/tools/public_api_guard/cdk/a11y.md
index ce3629d5b870..a18808003120 100644
--- a/tools/public_api_guard/cdk/a11y.md
+++ b/tools/public_api_guard/cdk/a11y.md
@@ -399,7 +399,7 @@ export const LIVE_ANNOUNCER_DEFAULT_OPTIONS: InjectionToken<LiveAnnouncerDefault
 // @public (undocumented)
 export const LIVE_ANNOUNCER_ELEMENT_TOKEN: InjectionToken<HTMLElement | null>;
 
-// @public
+// @public @deprecated
 export function LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY(): null;
 
 // @public (undocumented)
@@ -463,10 +463,10 @@ export function removeAriaReferencedId(el: Element, attr: `aria-${string}`, id:
 // @public
 export const TREE_KEY_MANAGER: InjectionToken<TreeKeyManagerFactory<any>>;
 
-// @public
+// @public @deprecated
 export function TREE_KEY_MANAGER_FACTORY<T extends TreeKeyManagerItem>(): TreeKeyManagerFactory<T>;
 
-// @public
+// @public @deprecated
 export const TREE_KEY_MANAGER_FACTORY_PROVIDER: {
     provide: InjectionToken<TreeKeyManagerFactory<any>>;
     useFactory: typeof TREE_KEY_MANAGER_FACTORY;
diff --git a/tools/public_api_guard/material/autocomplete.md b/tools/public_api_guard/material/autocomplete.md
index a893df244e7a..ef2a7e94f993 100644
--- a/tools/public_api_guard/material/autocomplete.md
+++ b/tools/public_api_guard/material/autocomplete.md
@@ -34,16 +34,16 @@ export function getMatAutocompleteMissingPanelError(): Error;
 // @public
 export const MAT_AUTOCOMPLETE_DEFAULT_OPTIONS: InjectionToken<MatAutocompleteDefaultOptions>;
 
-// @public
+// @public @deprecated
 export function MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY(): MatAutocompleteDefaultOptions;
 
 // @public
 export const MAT_AUTOCOMPLETE_SCROLL_STRATEGY: InjectionToken<() => ScrollStrategy>;
 
-// @public
+// @public @deprecated
 export function MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy;
 
-// @public
+// @public @deprecated
 export const MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY_PROVIDER: {
     provide: InjectionToken<() => ScrollStrategy>;
     deps: (typeof Overlay)[];
diff --git a/tools/public_api_guard/material/button-toggle.md b/tools/public_api_guard/material/button-toggle.md
index 65c4ca8ee072..02f3fe7f2a91 100644
--- a/tools/public_api_guard/material/button-toggle.md
+++ b/tools/public_api_guard/material/button-toggle.md
@@ -23,7 +23,7 @@ export const MAT_BUTTON_TOGGLE_DEFAULT_OPTIONS: InjectionToken<MatButtonToggleDe
 // @public
 export const MAT_BUTTON_TOGGLE_GROUP: InjectionToken<MatButtonToggleGroup>;
 
-// @public (undocumented)
+// @public @deprecated
 export function MAT_BUTTON_TOGGLE_GROUP_DEFAULT_OPTIONS_FACTORY(): MatButtonToggleDefaultOptions;
 
 // @public
diff --git a/tools/public_api_guard/material/button.md b/tools/public_api_guard/material/button.md
index 58a35fa75e82..efe9d1f886e5 100644
--- a/tools/public_api_guard/material/button.md
+++ b/tools/public_api_guard/material/button.md
@@ -21,7 +21,7 @@ export const MAT_BUTTON_CONFIG: InjectionToken<MatButtonConfig>;
 // @public
 export const MAT_FAB_DEFAULT_OPTIONS: InjectionToken<MatFabDefaultOptions>;
 
-// @public
+// @public @deprecated
 export function MAT_FAB_DEFAULT_OPTIONS_FACTORY(): MatFabDefaultOptions;
 
 // @public
diff --git a/tools/public_api_guard/material/checkbox.md b/tools/public_api_guard/material/checkbox.md
index 9d7d5b6ecc99..88f5b11b42c5 100644
--- a/tools/public_api_guard/material/checkbox.md
+++ b/tools/public_api_guard/material/checkbox.md
@@ -22,7 +22,7 @@ import { Validator } from '@angular/forms';
 // @public
 export const MAT_CHECKBOX_DEFAULT_OPTIONS: InjectionToken<MatCheckboxDefaultOptions>;
 
-// @public
+// @public @deprecated
 export function MAT_CHECKBOX_DEFAULT_OPTIONS_FACTORY(): MatCheckboxDefaultOptions;
 
 // @public (undocumented)
diff --git a/tools/public_api_guard/material/core.md b/tools/public_api_guard/material/core.md
index 27fc22618909..8c1e85d20d2d 100644
--- a/tools/public_api_guard/material/core.md
+++ b/tools/public_api_guard/material/core.md
@@ -143,7 +143,7 @@ export const MAT_DATE_FORMATS: InjectionToken<MatDateFormats>;
 // @public
 export const MAT_DATE_LOCALE: InjectionToken<{}>;
 
-// @public
+// @public @deprecated
 export function MAT_DATE_LOCALE_FACTORY(): {};
 
 // @public (undocumented)
diff --git a/tools/public_api_guard/material/datepicker.md b/tools/public_api_guard/material/datepicker.md
index 592c92d4ff40..65d1e39a41fc 100644
--- a/tools/public_api_guard/material/datepicker.md
+++ b/tools/public_api_guard/material/datepicker.md
@@ -98,10 +98,10 @@ export const MAT_DATE_RANGE_SELECTION_STRATEGY: InjectionToken<MatDateRangeSelec
 // @public
 export const MAT_DATEPICKER_SCROLL_STRATEGY: InjectionToken<() => ScrollStrategy>;
 
-// @public
+// @public @deprecated
 export function MAT_DATEPICKER_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy;
 
-// @public
+// @public @deprecated
 export const MAT_DATEPICKER_SCROLL_STRATEGY_FACTORY_PROVIDER: {
     provide: InjectionToken<() => ScrollStrategy>;
     deps: (typeof Overlay)[];
@@ -114,16 +114,16 @@ export const MAT_DATEPICKER_VALIDATORS: any;
 // @public
 export const MAT_DATEPICKER_VALUE_ACCESSOR: any;
 
-// @public
+// @public @deprecated
 export function MAT_RANGE_DATE_SELECTION_MODEL_FACTORY(parent: MatSingleDateSelectionModel<unknown>, adapter: DateAdapter<unknown>): MatSingleDateSelectionModel<unknown>;
 
-// @public
+// @public @deprecated
 export const MAT_RANGE_DATE_SELECTION_MODEL_PROVIDER: FactoryProvider;
 
-// @public
+// @public @deprecated
 export function MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY(parent: MatSingleDateSelectionModel<unknown>, adapter: DateAdapter<unknown>): MatSingleDateSelectionModel<unknown>;
 
-// @public
+// @public @deprecated
 export const MAT_SINGLE_DATE_SELECTION_MODEL_PROVIDER: FactoryProvider;
 
 // @public
diff --git a/tools/public_api_guard/material/icon.md b/tools/public_api_guard/material/icon.md
index b4e5fcb334ba..cbe696e990e4 100644
--- a/tools/public_api_guard/material/icon.md
+++ b/tools/public_api_guard/material/icon.md
@@ -32,14 +32,14 @@ export function getMatIconNameNotFoundError(iconName: string): Error;
 // @public
 export function getMatIconNoHttpProviderError(): Error;
 
-// @public
+// @public @deprecated
 export const ICON_REGISTRY_PROVIDER: {
     provide: typeof MatIconRegistry;
     deps: (Optional[] | typeof DomSanitizer | typeof ErrorHandler)[];
     useFactory: typeof ICON_REGISTRY_PROVIDER_FACTORY;
 };
 
-// @public
+// @public @deprecated
 export function ICON_REGISTRY_PROVIDER_FACTORY(parentRegistry: MatIconRegistry, httpClient: HttpClient, sanitizer: DomSanitizer, errorHandler: ErrorHandler, document?: any): MatIconRegistry;
 
 // @public
@@ -57,7 +57,7 @@ export const MAT_ICON_DEFAULT_OPTIONS: InjectionToken<MatIconDefaultOptions>;
 // @public
 export const MAT_ICON_LOCATION: InjectionToken<MatIconLocation>;
 
-// @public
+// @public @deprecated
 export function MAT_ICON_LOCATION_FACTORY(): MatIconLocation;
 
 // @public
diff --git a/tools/public_api_guard/material/menu.md b/tools/public_api_guard/material/menu.md
index 5c8d334ec8ca..a0a41cfc29fa 100644
--- a/tools/public_api_guard/material/menu.md
+++ b/tools/public_api_guard/material/menu.md
@@ -39,7 +39,7 @@ export const MAT_MENU_PANEL: InjectionToken<MatMenuPanel<any>>;
 // @public
 export const MAT_MENU_SCROLL_STRATEGY: InjectionToken<() => ScrollStrategy>;
 
-// @public
+// @public @deprecated
 export const MAT_MENU_SCROLL_STRATEGY_FACTORY_PROVIDER: {
     provide: InjectionToken<() => ScrollStrategy>;
     deps: (typeof Overlay)[];
diff --git a/tools/public_api_guard/material/paginator.md b/tools/public_api_guard/material/paginator.md
index 078b87634a49..4bb9805d234c 100644
--- a/tools/public_api_guard/material/paginator.md
+++ b/tools/public_api_guard/material/paginator.md
@@ -21,14 +21,14 @@ import { ThemePalette } from '@angular/material/core';
 // @public
 export const MAT_PAGINATOR_DEFAULT_OPTIONS: InjectionToken<MatPaginatorDefaultOptions>;
 
-// @public
+// @public @deprecated
 export const MAT_PAGINATOR_INTL_PROVIDER: {
     provide: typeof MatPaginatorIntl;
     deps: Optional[][];
     useFactory: typeof MAT_PAGINATOR_INTL_PROVIDER_FACTORY;
 };
 
-// @public
+// @public @deprecated
 export function MAT_PAGINATOR_INTL_PROVIDER_FACTORY(parentIntl: MatPaginatorIntl): MatPaginatorIntl;
 
 // @public
diff --git a/tools/public_api_guard/material/progress-bar.md b/tools/public_api_guard/material/progress-bar.md
index 3005307de1c0..f7ac5c081a66 100644
--- a/tools/public_api_guard/material/progress-bar.md
+++ b/tools/public_api_guard/material/progress-bar.md
@@ -19,7 +19,7 @@ export const MAT_PROGRESS_BAR_DEFAULT_OPTIONS: InjectionToken<MatProgressBarDefa
 // @public
 export const MAT_PROGRESS_BAR_LOCATION: InjectionToken<MatProgressBarLocation>;
 
-// @public
+// @public @deprecated
 export function MAT_PROGRESS_BAR_LOCATION_FACTORY(): MatProgressBarLocation;
 
 // @public (undocumented)
diff --git a/tools/public_api_guard/material/progress-spinner.md b/tools/public_api_guard/material/progress-spinner.md
index f401ed839ddb..2269a982d022 100644
--- a/tools/public_api_guard/material/progress-spinner.md
+++ b/tools/public_api_guard/material/progress-spinner.md
@@ -13,7 +13,7 @@ import { ThemePalette } from '@angular/material/core';
 // @public
 export const MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS: InjectionToken<MatProgressSpinnerDefaultOptions>;
 
-// @public
+// @public @deprecated
 export function MAT_PROGRESS_SPINNER_DEFAULT_OPTIONS_FACTORY(): MatProgressSpinnerDefaultOptions;
 
 // @public (undocumented)
diff --git a/tools/public_api_guard/material/radio.md b/tools/public_api_guard/material/radio.md
index 0c9ca0a8bdd7..b04560f1c473 100644
--- a/tools/public_api_guard/material/radio.md
+++ b/tools/public_api_guard/material/radio.md
@@ -22,7 +22,7 @@ import { ThemePalette } from '@angular/material/core';
 // @public (undocumented)
 export const MAT_RADIO_DEFAULT_OPTIONS: InjectionToken<MatRadioDefaultOptions>;
 
-// @public (undocumented)
+// @public @deprecated
 export function MAT_RADIO_DEFAULT_OPTIONS_FACTORY(): MatRadioDefaultOptions;
 
 // @public
diff --git a/tools/public_api_guard/material/select.md b/tools/public_api_guard/material/select.md
index fe7b7fd0ac51..4e940f5d8f11 100644
--- a/tools/public_api_guard/material/select.md
+++ b/tools/public_api_guard/material/select.md
@@ -50,14 +50,14 @@ export const MAT_SELECT_CONFIG: InjectionToken<MatSelectConfig>;
 // @public
 export const MAT_SELECT_SCROLL_STRATEGY: InjectionToken<() => ScrollStrategy>;
 
-// @public
+// @public @deprecated
 export const MAT_SELECT_SCROLL_STRATEGY_PROVIDER: {
     provide: InjectionToken<() => ScrollStrategy>;
     deps: (typeof Overlay)[];
     useFactory: typeof MAT_SELECT_SCROLL_STRATEGY_PROVIDER_FACTORY;
 };
 
-// @public
+// @public @deprecated
 export function MAT_SELECT_SCROLL_STRATEGY_PROVIDER_FACTORY(overlay: Overlay): () => ScrollStrategy;
 
 // @public
diff --git a/tools/public_api_guard/material/sidenav.md b/tools/public_api_guard/material/sidenav.md
index cb4ad744edeb..13dc9bf4b1bb 100644
--- a/tools/public_api_guard/material/sidenav.md
+++ b/tools/public_api_guard/material/sidenav.md
@@ -25,7 +25,7 @@ import { Subject } from 'rxjs';
 // @public
 export const MAT_DRAWER_DEFAULT_AUTOSIZE: InjectionToken<boolean>;
 
-// @public
+// @public @deprecated
 export function MAT_DRAWER_DEFAULT_AUTOSIZE_FACTORY(): boolean;
 
 // @public
diff --git a/tools/public_api_guard/material/snack-bar.md b/tools/public_api_guard/material/snack-bar.md
index 2203619d11bd..8313d2ca29b8 100644
--- a/tools/public_api_guard/material/snack-bar.md
+++ b/tools/public_api_guard/material/snack-bar.md
@@ -34,7 +34,7 @@ export const MAT_SNACK_BAR_DATA: InjectionToken<any>;
 // @public
 export const MAT_SNACK_BAR_DEFAULT_OPTIONS: InjectionToken<MatSnackBarConfig<any>>;
 
-// @public
+// @public @deprecated
 export function MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY(): MatSnackBarConfig;
 
 // @public
diff --git a/tools/public_api_guard/material/sort.md b/tools/public_api_guard/material/sort.md
index c90bf778d7f4..023cdaf54f80 100644
--- a/tools/public_api_guard/material/sort.md
+++ b/tools/public_api_guard/material/sort.md
@@ -31,14 +31,14 @@ export interface ArrowViewStateTransition {
 // @public
 export const MAT_SORT_DEFAULT_OPTIONS: InjectionToken<MatSortDefaultOptions>;
 
-// @public
+// @public @deprecated
 export const MAT_SORT_HEADER_INTL_PROVIDER: {
     provide: typeof MatSortHeaderIntl;
     deps: Optional[][];
     useFactory: typeof MAT_SORT_HEADER_INTL_PROVIDER_FACTORY;
 };
 
-// @public
+// @public @deprecated
 export function MAT_SORT_HEADER_INTL_PROVIDER_FACTORY(parentIntl: MatSortHeaderIntl): MatSortHeaderIntl;
 
 // @public
diff --git a/tools/public_api_guard/material/stepper.md b/tools/public_api_guard/material/stepper.md
index 25e9f489d97e..1ab5ec562c2d 100644
--- a/tools/public_api_guard/material/stepper.md
+++ b/tools/public_api_guard/material/stepper.md
@@ -35,14 +35,14 @@ import { TemplateRef } from '@angular/core';
 import { ThemePalette } from '@angular/material/core';
 import { WritableSignal } from '@angular/core';
 
-// @public
+// @public @deprecated
 export const MAT_STEPPER_INTL_PROVIDER: {
     provide: typeof MatStepperIntl;
     deps: Optional[][];
     useFactory: typeof MAT_STEPPER_INTL_PROVIDER_FACTORY;
 };
 
-// @public
+// @public @deprecated
 export function MAT_STEPPER_INTL_PROVIDER_FACTORY(parentIntl: MatStepperIntl): MatStepperIntl;
 
 // @public (undocumented)
diff --git a/tools/public_api_guard/material/tabs.md b/tools/public_api_guard/material/tabs.md
index 1f43838d5c80..8b7ba4cb3915 100644
--- a/tools/public_api_guard/material/tabs.md
+++ b/tools/public_api_guard/material/tabs.md
@@ -35,7 +35,7 @@ import { ThemePalette } from '@angular/material/core';
 // @public
 export const _MAT_INK_BAR_POSITIONER: InjectionToken<_MatInkBarPositioner>;
 
-// @public
+// @public @deprecated
 export function _MAT_INK_BAR_POSITIONER_FACTORY(): _MatInkBarPositioner;
 
 // @public
diff --git a/tools/public_api_guard/material/tooltip.md b/tools/public_api_guard/material/tooltip.md
index ec2d78bf856e..61a89073a4e1 100644
--- a/tools/public_api_guard/material/tooltip.md
+++ b/tools/public_api_guard/material/tooltip.md
@@ -30,16 +30,16 @@ export function getMatTooltipInvalidPositionError(position: string): Error;
 // @public
 export const MAT_TOOLTIP_DEFAULT_OPTIONS: InjectionToken<MatTooltipDefaultOptions>;
 
-// @public
+// @public @deprecated
 export function MAT_TOOLTIP_DEFAULT_OPTIONS_FACTORY(): MatTooltipDefaultOptions;
 
 // @public
 export const MAT_TOOLTIP_SCROLL_STRATEGY: InjectionToken<() => ScrollStrategy>;
 
-// @public
+// @public @deprecated
 export function MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy;
 
-// @public
+// @public @deprecated
 export const MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY_PROVIDER: {
     provide: InjectionToken<() => ScrollStrategy>;
     deps: (typeof Overlay)[];