diff --git a/doc/services/portability/posix.rst b/doc/services/portability/posix.rst
index 83d8c78cbcec..38be76f9118e 100644
--- a/doc/services/portability/posix.rst
+++ b/doc/services/portability/posix.rst
@@ -157,7 +157,7 @@ multiple processes.
     pthread_condattr_init(),yes
     pthread_create(),yes
     pthread_detach(),yes
-    pthread_equal(),
+    pthread_equal(),yes
     pthread_exit(),yes
     pthread_getspecific(),yes
     pthread_join(),yes
diff --git a/include/zephyr/posix/pthread.h b/include/zephyr/posix/pthread.h
index b11c61a9f6ed..8258ac441605 100644
--- a/include/zephyr/posix/pthread.h
+++ b/include/zephyr/posix/pthread.h
@@ -396,10 +396,7 @@ pthread_t pthread_self(void);
  *
  * See IEEE 1003.1
  */
-static inline int pthread_equal(pthread_t pt1, pthread_t pt2)
-{
-	return (pt1 == pt2);
-}
+int pthread_equal(pthread_t pt1, pthread_t pt2);
 
 /**
  * @brief Destroy the read-write lock attributes object.
diff --git a/lib/posix/pthread.c b/lib/posix/pthread.c
index 652e539e48a3..519d68091248 100644
--- a/lib/posix/pthread.c
+++ b/lib/posix/pthread.c
@@ -848,4 +848,9 @@ static int posix_thread_pool_init(void)
 	return 0;
 }
 
+int pthread_equal(pthread_t pt1, pthread_t pt2)
+{
+	return (pt1 == pt2);
+}
+
 SYS_INIT(posix_thread_pool_init, PRE_KERNEL_1, 0);
diff --git a/tests/posix/common/src/pthread.c b/tests/posix/common/src/pthread.c
index f333fb1594b2..3cd284f62dc4 100644
--- a/tests/posix/common/src/pthread.c
+++ b/tests/posix/common/src/pthread.c
@@ -771,3 +771,9 @@ ZTEST(posix_apis, test_barrier)
 	ret = pthread_barrierattr_destroy(&attr);
 	zassert_equal(ret, 0, "pthread_barrierattr_destroy failed");
 }
+
+ZTEST(posix_apis, test_pthread_equal)
+{
+	zassert_true(pthread_equal(pthread_self(), pthread_self()));
+	zassert_false(pthread_equal(pthread_self(), (pthread_t)4242));
+}