San Ildefonso Peninsula

San Ildefonso Peninsula is a peninsula in Central Luzon, central part of Luzon island, Philippines, at 16°09′30″N 122°05′49″E / 16.1583333°N 122.0969444°E / 16.1583333; 122.0969444. It is entirely under the jurisdiction of the municipality of Casiguran, Aurora.

San Ildefonso Peninsula seen from space

The southern half of the peninsula is under Barangay San Ildefonso, the northern tip is under Barangay Culat, while the remainder belongs to Barangay Cozo.