Cognomen Pal-Osan (Pal-Osan 
) , all around the world, is a very rare family name. The cognomen Pal-Osan is habitual in South-eastern Asia, particularly Philippines, where it is a very rare surname. Parts of the name also exists independently as a last name Pal, and a last name Osan.
| VARIANT | COUNTRY |
|---|---|
| Pal-Osan | Philippines |