Family name Isa-Ac (Isa-Ac 
) , in all the world, is a very rare last name. The cognomen Isa-Ac is characteristic of South-eastern Asia, particularly Philippines, where it is a very rare surname. More frequently, Isa-Ac is the forename as well as the last name. Parts of the name also exists independently as a first name Isa.
| VARIANT | COUNTRY |
|---|---|
| Isa-Ac | Philippines |