Cognomen אוטו (Otto 
, Oto 
, Ottó 
) , around the world, is a widespread surname. The last name אוטו is characteristic of Antigua and Barbuda, where it is a common surname, Liechtenstein, where it is quite a common surname, and Germany (explore the name in all countries). Not in comparison with a country's population, the name is most common in Germany, the United States, and South Africa. More frequently, אוטו is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Otto | Germany, Guatemala, Brazil, United States, Japan |
| Oto | Germany, Brazil, Czechia, United States, Guatemala |
| Ottó | Hungary, Germany, Czechia, United States, Slovakia |
| אוטו | Israel |
| אוטו אלנבוגן IL (b. 1922) |
|