All around the world, รัตนากาญจน์ (Rattanakan 
, Rattanakarn , รัตนากาญจน์ ) is a very rare female forename. The forename รัตนากาญจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare girly name. More prevalently, รัตนากาญจน์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rattanakarn, Ruttanakan, Rattanakan, รัตนากาญจน์ | Thailand |
Radhathanakarn, Radtanagan, Rattanagarn, Ratthanakan, Ratthanakarn, and Ruttanakarn