Corregidor is an island in the entrance of the Philippines' Manila Bay.

The island is about 48 kilometers west of Manila which is stragetically located at the entrance of Manila Bay. It is shaped like a tadpole, with its tail running eastward. With a land area of 9 km², it is under the jurisdiction of the municipality of Ternate, Cavite. Along with Caballo, which lies 2 km south of the "tail's" tip, this island partially blocks the entrance to Manila Bay, and thus forming a northern and southern entrance.

Corregidor was the location of Fort Mills.

During the Battle of the Philippines (1941-42), General Douglas MacArthur used Corregidor as Allied headquarters in the Philippines until March 11, 1942. Japanese troops forced a surrender of the remaining American and Filipino forces on Corregidor on May 6.

It was liberated by the 503rd Parachute Infantry Regiment.

See also: Geography of the Philippines