diff --git a/stdlib/argparse.pyi b/stdlib/argparse.pyi
index 1b86a4e10cbb..88fd656f7de7 100644
--- a/stdlib/argparse.pyi
+++ b/stdlib/argparse.pyi
@@ -205,20 +205,33 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
     def print_help(self, file: IO[str] | None = ...) -> None: ...
     def format_usage(self) -> str: ...
     def format_help(self) -> str: ...
-    def parse_known_args(
-        self, args: Sequence[str] | None = ..., namespace: Namespace | None = ...
-    ) -> tuple[Namespace, list[str]]: ...
+    @overload
+    def parse_known_args(self, args: Sequence[str] | None = ..., namespace: None = ...) -> tuple[Namespace, list[str]]: ...  # type: ignore[misc]
+    @overload
+    def parse_known_args(self, args: Sequence[str] | None, namespace: _N) -> tuple[_N, list[str]]: ...
+    @overload
+    def parse_known_args(self, args: Sequence[str] | None = ..., *, namespace: _N) -> tuple[_N, list[str]]: ...
     def convert_arg_line_to_args(self, arg_line: str) -> list[str]: ...
     def exit(self, status: int = ..., message: str | None = ...) -> NoReturn: ...
     def error(self, message: str) -> NoReturn: ...
-    def parse_intermixed_args(self, args: Sequence[str] | None = ..., namespace: Namespace | None = ...) -> Namespace: ...
-    def parse_known_intermixed_args(
-        self, args: Sequence[str] | None = ..., namespace: Namespace | None = ...
+    @overload
+    def parse_intermixed_args(self, args: Sequence[str] | None = ..., namespace: None = ...) -> Namespace: ...  # type: ignore[misc]
+    @overload
+    def parse_intermixed_args(self, args: Sequence[str] | None, namespace: _N) -> _N: ...
+    @overload
+    def parse_intermixed_args(self, args: Sequence[str] | None = ..., *, namespace: _N) -> _N: ...
+    @overload
+    def parse_known_intermixed_args(  # type: ignore[misc]
+        self, args: Sequence[str] | None = ..., namespace: None = ...
     ) -> tuple[Namespace, list[str]]: ...
+    @overload
+    def parse_known_intermixed_args(self, args: Sequence[str] | None, namespace: _N) -> tuple[_N, list[str]]: ...
+    @overload
+    def parse_known_intermixed_args(self, args: Sequence[str] | None, *, namespace: _N) -> tuple[_N, list[str]]: ...
     # undocumented
     def _get_optional_actions(self) -> list[Action]: ...
     def _get_positional_actions(self) -> list[Action]: ...
-    def _parse_known_args(self, arg_strings: list[str], namespace: Namespace) -> tuple[Namespace, list[str]]: ...
+    def _parse_known_args(self, arg_strings: list[str], namespace: _N) -> tuple[_N, list[str]]: ...
     def _read_args_from_files(self, arg_strings: list[str]) -> list[str]: ...
     def _match_argument(self, action: Action, arg_strings_pattern: str) -> int: ...
     def _match_arguments_partial(self, actions: Sequence[Action], arg_strings_pattern: str) -> list[int]: ...