Cognomen Bagsak (Bagsak 
) , in the world, is a very rare family name. The surname Bagsak is habitual in Philippines, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Bagsak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bagsak | Philippines, India |