Last name Utayana (Utayana 
) , in the entire world, is a very rare family name. The last name Utayana is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, Utayana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Utayana | India, Thailand |