Cognomen จำนัล (Chamnan 
, จำนัล) , in all the world, is quite a rare family name. The family name จำนัล is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname, Cambodia, where it is a rare surname, and Singapore. In absolute terms, it is the most numerous in South-eastern Asia, particularly Thailand, Cambodia, and Malaysia. Also, จำนัล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chamnan | Cambodia, United States, Singapore, Thailand, Malaysia |