Surname Lam-Osen (Lam-Osen 
) , around the world, is a very rare family name. The surname Lam-Osen is habitual in South-eastern Asia, particularly Philippines, where it is a very rare surname. Much less frequently, Lam-Osen is the forename as well as the last name. Parts of the name also exists independently as a last name Lam, and a last name Osen.
| VARIANT | COUNTRY |
|---|---|
| Lam-Osen | Philippines |