Surname Kaettisak (Kaettisak 
) , across the world, is an extremely rare cognomen. Much more prevalently, Kaettisak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaettisak | Thailand |
Noiphan, Khlibyam, Netsomboon, Wongkeaw, and Precharod