In all the world, แสงอุทัย (แสงอุทัย 
, Sangutai 
, Sanguthai ) is a rare unisex first name. The first name แสงอุทัย is characteristic of Thailand, where it is a rare epicene name, and India, where it is an extremely rare female name. More prevalently, แสงอุทัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| แสงอุทัย | Thailand |
| Sangutai | India, United States, Thailand |
| Sanguthai, Sangouthai | United States, Thailand |
Be Happy, Saeng Utai, Saeng Uthai, Saeng-Uthai, Saengarthit, Saengaudom, Saengauthai, Saengauthat, Saengautthai, Saengouthai, Saengutai, Saenguthai, Sangaumphai, Sangauthai, and Sangumphai