diff --git a/py-polars/polars/__init__.py b/py-polars/polars/__init__.py
index f3f566dab9a2..be9cdc3d7640 100644
--- a/py-polars/polars/__init__.py
+++ b/py-polars/polars/__init__.py
@@ -433,43 +433,3 @@ def __getattr__(name: str) -> Any:
 
     msg = f"module {__name__!r} has no attribute {name!r}"
     raise AttributeError(msg)
-
-
-# fork() breaks Polars thread pool, so warn users who might be doing this.
-# Keep track so that we warn only once
-_WARNED = False
-
-
-def __install_postfork_hook() -> None:
-    message = """\
-Using fork() can cause Polars to deadlock in the child process.
-In addition, using fork() with Python in general is a recipe for mysterious
-deadlocks and crashes.
-
-The most likely reason you are seeing this error is because you are using the
-multiprocessing module on Linux, which uses fork() by default. This will be
-fixed in Python 3.14. Until then, you want to use the "spawn" context instead.
-
-See https://docs.pola.rs/user-guide/misc/multiprocessing/ for details.
-
-If you really know what you're doing, you can silence this warning with the warning module
-or by setting POLARS_ALLOW_FORKING_THREAD=1.
-"""
-    import os
-
-    if os.environ.get("POLARS_ALLOW_FORKING_THREAD") == "1":
-        return None
-
-    def before_hook() -> None:
-        global _WARNED
-        if not _WARNED:
-            import warnings
-
-            warnings.warn(message, RuntimeWarning, stacklevel=2)
-            _WARNED = True
-
-    if hasattr(os, "register_at_fork"):
-        os.register_at_fork(before=before_hook)
-
-
-__install_postfork_hook()
diff --git a/py-polars/tests/unit/test_polars_import.py b/py-polars/tests/unit/test_polars_import.py
index 2686c094999b..fa1779de3478 100644
--- a/py-polars/tests/unit/test_polars_import.py
+++ b/py-polars/tests/unit/test_polars_import.py
@@ -1,8 +1,6 @@
 from __future__ import annotations
 
 import compileall
-import multiprocessing
-import os
 import subprocess
 import sys
 from pathlib import Path
@@ -99,32 +97,3 @@ def test_polars_import() -> None:
             import_time_ms = polars_import_time // 1_000
             msg = f"Possible import speed regression; took {import_time_ms}ms\n{df_import}"
             raise AssertionError(msg)
-
-
-def run_in_child() -> int:
-    return 123
-
-
-@pytest.mark.skipif(not hasattr(os, "fork"), reason="Requires fork()")
-def test_fork_safety(recwarn: pytest.WarningsRecorder) -> None:
-    def get_num_fork_warnings() -> int:
-        fork_warnings = 0
-        for warning in recwarn:
-            if issubclass(warning.category, RuntimeWarning) and str(
-                warning.message
-            ).startswith("Using fork() can cause Polars"):
-                fork_warnings += 1
-        return fork_warnings
-
-    assert get_num_fork_warnings() == 0
-
-    # Using forkserver and spawn context should not do any of our warning:
-    for context in ["spawn", "forkserver"]:
-        with multiprocessing.get_context(context).Pool(1) as pool:
-            assert pool.apply(run_in_child) == 123
-    assert get_num_fork_warnings() == 0
-
-    # Using fork()-based multiprocessing should raise a warning:
-    with multiprocessing.get_context("fork").Pool(1) as pool:
-        assert pool.apply(run_in_child) == 123
-    assert get_num_fork_warnings() == 1