The Bataan Peninsula is a rocky extension of the Zambales Mountains, on Luzon in the Philippines. It separates the Manila Bay from the West Philippine Sea. The peninsula features Mount Natib 1,253 m in the north and the Mariveles Mountains in the south, which includes Mount Samat, the location of the historical marker for the Bataan Death March.

Mariveles, at the southern tip, can be reached via jet ferry plying the Mariveles-to-Manila route that has an approximate travel time of 40 minutes.