Cognomen Onoto (Onoto 
) , in the world, is a very rare last name. The cognomen Onoto is habitual in Nigeria, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and Argentina. More frequently, Onoto is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onoto | Nigeria, Japan, Mexico, Italy, India |