Family name Busilag (Busilag 
) , all over the world, is a very rare last name. The last name Busilag is habitual in South-eastern Asia, particularly Philippines, where it is a very rare surname. Very seldom, Busilag is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Busilag | Philippines |
Mando, Romando, and Senforiano