Last name Ruttaya (Ruttaya 
) , all around the world, is a rare surname. The cognomen Ruttaya is characteristic of Thailand, where it is a rare surname, and India, where it is an extremely rare surname. Much less frequently, Ruttaya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruttaya | India, United States, Thailand |