Cayo or cayó may refer to:Cayo (film), a 2005 Puerto Rican film starring Roselyn Sánchez Cayo District, a district in the west of the nation of Belize San Ignacio, Belize, a town in the Cayo District San Ignacio–Santa Elena, twin towns in the Cayo District Caio, Carmarthenshire, a village in Wales sometimes spelt with a 'y' Cayo Hundred, a geographic division named after the village "Cayó", a 2022 song by Arca Elsa Cayo, Peruvian filmmaker