Family name Ha-Os (Ha-Os 
) , worldwide, is a very rare cognomen. The last name Ha-Os is characteristic of South-eastern Asia, particularly Philippines, where it is a very rare surname. Much less frequently, Ha-Os is the forename as well as the last name. Parts of the name also exists independently as a last name Ha, and a last name Os.
| VARIANT | COUNTRY |
|---|---|
| Ha-Os | Philippines |