CUYAPO, a municipality (with administration centre and 34 barrios or districts) of the province of Nueva Ecija, Luzon, Philippine Islands, 28 m. N.N.W. of San Isidro, the provincial capital. Rice is the principal product. Pop. (1918) 19,344, of whom 9,887 were males. In 1918 there were ten household in dustry establishments, with output valued at 5,000 pesos. The schools were all public. The language spoken is Pampango.