Cognomen Kittisuthiwat (Kittisuthiwat 
) , in the world, is a very rare surname. The last name Kittisuthiwat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kittisuthiwat | Thailand |
Lertsak, Kornnutapat, and Patkotchanut