Cognomen ราชสกุล (Tokhan 
, Tokul 
, ราชสกุล ) , across the world, is quite a rare last name. The surname ราชสกุล is characteristic of Turkey, where it is quite a rare surname, Thailand, where it is a very rare surname, and Germany. Likewise, ราชสกุล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tokhan | Turkey, India, United States, Thailand |
| Tokul | Turkey, Germany, Philippines, Thailand, India |
| Tokraya, ราชสกุล | Thailand |