Cognomen Lamsong (Lamsong 
) , in all the world, is a very rare family name. The family name Lamsong is habitual in Canada, where it is an extremely rare surname, the United States, and India. More frequently, Lamsong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lamsong | India, Canada, United States |