Cognomen Othongkam (Othongkam 
) , in all the world, is a very rare last name. The surname Othongkam is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Othongkam | Thailand |
Muksuda, Sakhorn, Kachaporn, Thongprew, and Wongsathorn