Family name Kiertisak (Kiertisak 
) , all around the world, is an extremely rare surname. Predominantly, Kiertisak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kiertisak | United States, Thailand |
Toh, Porisa, Nabamrung, Kaewbamrung, Jindakan, Supinnapong, Supanitayanon, and Sukawattana