Cognomen Dieto (Dieto 
) , around the world, is a rare surname. The last name Dieto is habitual in Kenya, where it is a rare surname, Philippines, and South Africa, where it is an extremely rare surname. Very seldom, Dieto is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dieto | South Africa, Philippines, Kenya, India, Indonesia |