diff --git a/stubs/whatthepatch/METADATA.toml b/stubs/whatthepatch/METADATA.toml
new file mode 100644
index 000000000000..f3e83f9c456b
--- /dev/null
+++ b/stubs/whatthepatch/METADATA.toml
@@ -0,0 +1 @@
+version = "1.0.*"
diff --git a/stubs/whatthepatch/whatthepatch/__init__.pyi b/stubs/whatthepatch/whatthepatch/__init__.pyi
new file mode 100644
index 000000000000..600e4526291c
--- /dev/null
+++ b/stubs/whatthepatch/whatthepatch/__init__.pyi
@@ -0,0 +1,2 @@
+from .apply import apply_diff as apply_diff
+from .patch import parse_patch as parse_patch
diff --git a/stubs/whatthepatch/whatthepatch/apply.pyi b/stubs/whatthepatch/whatthepatch/apply.pyi
new file mode 100644
index 000000000000..c927a4cef0f4
--- /dev/null
+++ b/stubs/whatthepatch/whatthepatch/apply.pyi
@@ -0,0 +1,8 @@
+from collections.abc import Iterable
+
+from . import patch as patch
+from .exceptions import HunkApplyException as HunkApplyException, SubprocessException as SubprocessException
+from .snippets import remove as remove, which as which
+
+def apply_patch(diffs: patch.diffobj | Iterable[patch.diffobj]) -> None: ...
+def apply_diff(diff: patch.diffobj, text: str | Iterable[str], reverse: bool = ..., use_patch: bool = ...) -> list[str]: ...
diff --git a/stubs/whatthepatch/whatthepatch/exceptions.pyi b/stubs/whatthepatch/whatthepatch/exceptions.pyi
new file mode 100644
index 000000000000..918275ea28ef
--- /dev/null
+++ b/stubs/whatthepatch/whatthepatch/exceptions.pyi
@@ -0,0 +1,14 @@
+class WhatThePatchException(Exception): ...
+
+class HunkException(WhatThePatchException):
+    hunk: int | None
+    def __init__(self, msg: str, hunk: int | None = ...) -> None: ...
+
+class ApplyException(WhatThePatchException): ...
+
+class SubprocessException(ApplyException):
+    code: int
+    def __init__(self, msg: str, code: int) -> None: ...
+
+class HunkApplyException(HunkException, ApplyException, ValueError): ...
+class ParseException(HunkException, ValueError): ...
diff --git a/stubs/whatthepatch/whatthepatch/patch.pyi b/stubs/whatthepatch/whatthepatch/patch.pyi
new file mode 100644
index 000000000000..dcabfa37d359
--- /dev/null
+++ b/stubs/whatthepatch/whatthepatch/patch.pyi
@@ -0,0 +1,77 @@
+from collections.abc import Iterable, Iterator
+from typing import NamedTuple, Pattern
+
+from . import exceptions as exceptions
+from .snippets import findall_regex as findall_regex, split_by_regex as split_by_regex
+
+class header(NamedTuple):
+    index_path: str | None
+    old_path: str
+    old_version: str | None
+    new_path: str
+    new_version: str | None
+
+class diffobj(NamedTuple):
+    header: header | None
+    changes: list[Change] | None
+    text: str
+
+class Change(NamedTuple):
+    old: int | None
+    new: int | None
+    line: int | None
+    hunk: int
+
+file_timestamp_str: str
+diffcmd_header: Pattern[str]
+unified_header_index: Pattern[str]
+unified_header_old_line: Pattern[str]
+unified_header_new_line: Pattern[str]
+unified_hunk_start: Pattern[str]
+unified_change: Pattern[str]
+context_header_old_line: Pattern[str]
+context_header_new_line: Pattern[str]
+context_hunk_start: Pattern[str]
+context_hunk_old: Pattern[str]
+context_hunk_new: Pattern[str]
+context_change: Pattern[str]
+ed_hunk_start: Pattern[str]
+ed_hunk_end: Pattern[str]
+rcs_ed_hunk_start: Pattern[str]
+default_hunk_start: Pattern[str]
+default_hunk_mid: Pattern[str]
+default_change: Pattern[str]
+git_diffcmd_header: Pattern[str]
+git_header_index: Pattern[str]
+git_header_old_line: Pattern[str]
+git_header_new_line: Pattern[str]
+git_header_file_mode: Pattern[str]
+git_header_binary_file: Pattern[str]
+bzr_header_index: Pattern[str]
+bzr_header_old_line: Pattern[str]
+bzr_header_new_line: Pattern[str]
+svn_header_index: Pattern[str]
+svn_header_timestamp_version: Pattern[str]
+svn_header_timestamp: Pattern[str]
+cvs_header_index: Pattern[str]
+cvs_header_rcs: Pattern[str]
+cvs_header_timestamp: Pattern[str]
+cvs_header_timestamp_colon: Pattern[str]
+old_cvs_diffcmd_header: Pattern[str]
+
+def parse_patch(text: str | Iterable[str]) -> Iterator[diffobj]: ...
+def parse_header(text: str | Iterable[str]) -> header | None: ...
+def parse_scm_header(text: str | Iterable[str]) -> header | None: ...
+def parse_diff_header(text: str | Iterable[str]) -> header | None: ...
+def parse_diff(text: str | Iterable[str]) -> list[Change] | None: ...
+def parse_git_header(text: str | Iterable[str]) -> header | None: ...
+def parse_svn_header(text: str | Iterable[str]) -> header | None: ...
+def parse_cvs_header(text: str | Iterable[str]) -> header | None: ...
+def parse_diffcmd_header(text: str | Iterable[str]) -> header | None: ...
+def parse_unified_header(text: str | Iterable[str]) -> header | None: ...
+def parse_context_header(text: str | Iterable[str]) -> header | None: ...
+def parse_default_diff(text: str | Iterable[str]) -> list[Change] | None: ...
+def parse_unified_diff(text: str | Iterable[str]) -> list[Change] | None: ...
+def parse_context_diff(text: str | Iterable[str]) -> list[Change] | None: ...
+def parse_ed_diff(text: str | Iterable[str]) -> list[Change] | None: ...
+def parse_rcs_ed_diff(text: str | Iterable[str]) -> list[Change] | None: ...
diff --git a/stubs/whatthepatch/whatthepatch/snippets.pyi b/stubs/whatthepatch/whatthepatch/snippets.pyi
new file mode 100644
index 000000000000..3d867ddb3b9d
--- /dev/null
+++ b/stubs/whatthepatch/whatthepatch/snippets.pyi
@@ -0,0 +1,7 @@
+from collections.abc import Sequence
+from typing import Pattern
+
+def remove(path: str) -> None: ...
+def findall_regex(items: Sequence[str], regex: Pattern[str]) -> list[int]: ...
+def split_by_regex(items: Sequence[str], regex: Pattern[str]) -> list[Sequence[str]]: ...
+def which(program: str) -> str | None: ...