Cognomen สู้ (Su 
, Fite 
, ស៊ូ 
) , in the entire world, is a prevalent last name. The surname สู้ is habitual in Mongolia, where it is a prevalent surname, Myanmar, where it is a widespread surname, and Cayman Islands, where it is a common surname (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in China, Myanmar, and Mongolia. Much less frequently, สู้ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Su | China, Indonesia, Mongolia, Myanmar, Taiwan |
| Fite | Malaysia, Indonesia, India, United States, Myanmar |
| ស៊ូ | Cambodia |