Family name Cahuayo (Cahuayo 
) , across the world, is a very rare surname. The last name Cahuayo is habitual in Latin America and the Caribbean, particularly Peru, where it is a rare surname, and Mexico, where it is an extremely rare surname. Very seldom, Cahuayo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cahuayo | Peru, Mexico |