Palaui Island is one of the islands in the Philippines, located off the northeastern extremity of Luzon Island, the largest island in the country. It lies off the northwestern part of a large promontory in San Vicente, in the municipality of Santa Ana, Cagayan province.
Palaui Island was declared as a National Marine Reserve in August 28, 1994 encompassing an area of 7,145 hectares (17,660 acres). The waters around the island boast of 21 commercial species of fishes with about 50 hectares (120 acres) of undisturbed corals.
Because of its remoteness, Palaui Island is home to 105 species of rattan and similar commercially valuable timber producing wood species plus 25 imported shrubs and is the sanctuary for 90 migratory birds.