Cognomen Saipun (Saipun 
) , all over the world, is a rare last name. The cognomen Saipun is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, Malaysia, and Philippines, where it is an extremely rare surname. Likewise, Saipun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saipun | Philippines, Malaysia, India, United States, Thailand |