Family name Rittisuk (Rittisuk 
) , worldwide, is an extremely rare last name. The surname Rittisuk is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Rittisuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rittisuk | Thailand |
Sunisa, Khamsuan, and Arachaporn