Family name วรจักร์ (วรจักร์ 
, Worachak 
, Worrajak 
) , around the world, is a rare surname. The family name วรจักร์ is characteristic of Thailand, where it is a rare surname, and Argentina, where it is an extremely rare surname. Likewise, วรจักร์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วรจักร์ | Thailand |
| Worachak | Thailand, Argentina |
| Worrajak | United States, Thailand |