Cognomen ตุด (Tut 
, ตุด 
) , all over the world, is a common last name. The cognomen ตุด is characteristic of Guatemala, where it is quite a common surname, Belize, and Turkey, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Turkey, Guatemala, and Mexico. Much less frequently, ตุด is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tut | Myanmar, Mexico, Sudan, Guatemala, Turkey |
| ตุด | Thailand |