APARRI, a town of the province of Cagayán, Luzon, Philippine Islands, on the Grande de Cagayán river near, its mouth, about 55 m. N. of Tuguegarao, the capital. Pop. (1903) 18,252. The valley is one of the largest tobacco-producing sections in the Philippines; and the town has a considerable coastwise trade. Here, too, is a meteorological station.