The Sheik Karimol Makhdum Mosque is located in Barangay Tubig Indangan, Simunul, Tawi-Tawi, the Philippines. It is the oldest mosque in the Philippines and was built by an Arab trader, Sheikh Makhdum Karim in 1380. The original pillars of the old mosque can still be found inside the new building. It is also declared as a National Historical Landmark by the National Historical Commission and a National Cultural Treasure by the National Museum.