Cognomen Буто (Buto 
, Butto 
, Bouto 
) , throughout the world, is quite a common surname. The cognomen Буто is characteristic of Lesotho, where it is quite a rare surname, Belarus, and Venezuela. Not in comparison with a country's population, it is commonest in Italy, Venezuela, and the United States. Likewise, Буто is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Buto | Italy, Philippines, United States, India, Venezuela |
| Butto | Italy, United States, India, Bangladesh, Venezuela |
| Bouto | Democratic Republic of the Congo, Thailand, United States, Brazil, Venezuela |
| Буто | Kazakhstan, Russia, Ukraine, Belarus |