Cognomen ชำนาญหมอ (ชำนาญหมอ, Chamnanmo 
, Chamnanmoh 
) , around the world, is a very rare family name. The cognomen ชำนาญหมอ is characteristic of Australia, where it is a very rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chamnanmo | Thailand |
| Chamnanmoh | Australia |