All around the world, รุ่งอุทัย (รุ่งอุทัย, Rung Uthai, Roongutai 
) is an extremely rare unknown gender first name. Much more frequently, รุ่งอุทัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Roongutai | Thailand |
| Roonguthai | United States, Thailand |
Rounguthai, and Runguthai