Surname Sedtachai (Sedtachai 
) , across the world, is an extremely rare family name. Predominantly, Sedtachai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sedtachai | Thailand |
Kainooupa, Kainoonpa, Jiranusornkul, Wanachayanont, and Suriyalerdkul