Family name Usapan (Usapan 
) , in all the world, is an extremely rare surname. The surname Usapan is characteristic of South-eastern Asia, particularly Philippines, where it is an extremely rare surname. Predominantly, Usapan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Usapan | United States, India, Philippines, Thailand |
Tapsri, Pahaphrom, Tansiri, Sakornyen, and Teppratoom