Cognomen Rithtichai (Rithtichai 
) , around the world, is a very rare family name. The family name Rithtichai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Rithtichai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rithtichai | Thailand |