Sibuyan is a crescent-shaped island of Romblon Province, Philippines. Located in the namesake Sibuyan Sea, it has an area of 445 square kilometres (172 sq mi). The island has two prominent peaks, Mount Guiting-Guiting with a height of 2,058 metres (6,752 ft) and Mount Nailog with a height of 789 metres (2,589 ft).