Across the world, อุทนา (อุทนา 
) is a very rare mostly boy's, but uncommonly girly forename. The forename อุทนา is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare dominantly masculine, but infrequently feminine name. Likewise, อุทนา is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| อุทนา | Thailand |