Cognomen Kittayos (Kittayos 
) , all around the world, is an extremely rare family name. Much more frequently, Kittayos is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kittayos | United States, Thailand |
Suchitt, Liliequist, Sakornyen, Virojjanapirom, and Rungcharunthanakul