Throughout the world, วรสิทธิกร (วรสิทธิกร 
, Vorasittikorn , Vorrasitthikorn ) is an extremely rare unknown gender forename. Much more frequently, วรสิทธิกร is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| วรสิทธิกร, Vorrasitthikorn, Vorasittikorn, Worasittikorn | Thailand |
Vorasitthikorn, Worasithikorn, Worasitthikon, Worasitthikorn, Worrasitthikon, Worrasitthikorn, Worrasittikon, and Worrasittikorn