Surname Sinaun (Sinaun 
) , throughout the world, is a very rare cognomen. The cognomen Sinaun is habitual in Thailand, where it is a very rare surname, Malaysia, and Mexico, where it is an extremely rare surname. More frequently, Sinaun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinaun | United States, Malaysia, Mexico, Thailand |