diff --git a/Source/DrangPlatform/Source/win32/sync/mutex.c b/Source/DrangPlatform/Source/win32/sync/mutex.c
new file mode 100644
index 0000000..80474b6
--- /dev/null
+++ b/Source/DrangPlatform/Source/win32/sync/mutex.c
@@ -0,0 +1,99 @@
+#include <drang/alloc.h>
+#include <drang/sync.h>
+
+#define WIN32_LEAN_AND_MEAN
+#include <stdbool.h>
+#include <windows.h>
+
+
+struct drang_mutex
+{
+    CRITICAL_SECTION cs;
+    bool initialized;
+};
+
+size_t drang_mutex_size(void)
+{
+    return sizeof(struct drang_mutex);
+}
+
+int drang_mutex_new(struct drang_mutex **mutex)
+{
+    struct drang_mutex *m = NULL;
+    DRANG_BEGIN_TRY();
+
+    DRANG_CHECK(mutex != NULL, DRANG_EINVAL);
+
+    m = DRANG_TRY_ALLOC_T(struct drang_mutex);
+
+    DRANG_TRY(drang_mutex_init(m));
+
+    DRANG_RETURN_IN(mutex, m);
+
+    DRANG_CATCH(_)
+    {
+        if (m != NULL) {
+            drang_free(m);
+        }
+    }
+    DRANG_END_TRY();
+}
+
+void drang_mutex_free(struct drang_mutex *mutex)
+{
+    if (mutex == NULL) {
+        return;
+    }
+
+    drang_mutex_fini(mutex);
+    drang_free(mutex);
+}
+
+int drang_mutex_init(struct drang_mutex *mutex)
+{
+    DRANG_BEGIN_TRY();
+
+    DRANG_CHECK(mutex != NULL, DRANG_EINVAL);
+    DRANG_CHECK(!mutex->initialized, DRANG_EBUSY);
+
+    InitializeCriticalSection(&mutex->cs);
+    mutex->initialized = true;
+
+    DRANG_END_TRY_IGNORE();
+}
+
+void drang_mutex_fini(struct drang_mutex *mutex)
+{
+    if (mutex == NULL) {
+        return;
+    }
+
+    DeleteCriticalSection(&mutex->cs);
+    mutex->initialized = false;
+}
+
+int drang_mutex_lock(struct drang_mutex *mutex)
+{
+    DRANG_BEGIN_TRY();
+
+    DRANG_CHECK(mutex != NULL, DRANG_EINVAL);
+    DRANG_CHECK(mutex->initialized, DRANG_EINVAL);
+
+    EnterCriticalSection(&mutex->cs);
+
+    DRANG_END_TRY_IGNORE();
+}
+
+int drang_mutex_unlock(struct drang_mutex *mutex)
+{
+    DRANG_BEGIN_TRY();
+
+    DRANG_CHECK(mutex != NULL, DRANG_EINVAL);
+    DRANG_CHECK(mutex->initialized, DRANG_EINVAL);
+
+    LeaveCriticalSection(&mutex->cs);
+
+    DRANG_RETURN();
+
+    DRANG_END_TRY_IGNORE();
+}