diff --git a/libcxx/include/__algorithm/ranges_is_partitioned.h b/libcxx/include/__algorithm/ranges_is_partitioned.h
--- a/libcxx/include/__algorithm/ranges_is_partitioned.h
+++ b/libcxx/include/__algorithm/ranges_is_partitioned.h
@@ -32,7 +32,7 @@
 struct __fn {
   template <class _Iter, class _Sent, class _Proj, class _Pred>
   _LIBCPP_HIDE_FROM_ABI constexpr static bool
-  __is_parititioned_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) {
+  __is_partitioned_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) {
     for (; __first != __last; ++__first) {
       if (!std::invoke(__pred, std::invoke(__proj, *__first)))
         break;
@@ -56,7 +56,7 @@
             indirect_unary_predicate<projected<_Iter, _Proj>> _Pred>
   _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool
   operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const {
-    return __is_parititioned_impl(std::move(__first), std::move(__last), __pred, __proj);
+    return __is_partitioned_impl(std::move(__first), std::move(__last), __pred, __proj);
   }
 
   template <input_range _Range,
@@ -64,7 +64,7 @@
             indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred>
   _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr bool
   operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const {
-    return __is_parititioned_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj);
+    return __is_partitioned_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj);
   }
 };
 } // namespace __is_partitioned