Cognomen กิตติธรรมกุล (กิตติธรรมกุล 
, Kittitamakul , Kittithamkun) , in all the world, is a very rare family name. The last name กิตติธรรมกุล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kittithumkul, Kittitamakul, กิตติธรรมกุล | Thailand |