Family name Kasemsant (Kasemsant 
) , throughout the world, is a rare cognomen. The cognomen Kasemsant is habitual in Taiwan, where it is a rare surname, Thailand, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Taiwan, Thailand, and the United States. Likewise, Kasemsant is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasemsant | United States, Taiwan, United Kingdom, Thailand |