Cognomen รัสดา (Rusda 
, รัสดา , Ratsada 
) , throughout the world, is quite a rare last name. The surname รัสดา is characteristic of South-eastern Asia, particularly Indonesia, where it is a rare surname, Malaysia, where it is a very rare surname, and Thailand, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Indonesia, India, and Malaysia. More prevalently, รัสดา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rusda | Malaysia, Thailand, Indonesia, India, Philippines |
| รัสดา | Thailand |
| Ratsada | France, United States, Thailand |
| Rassada | Russia, United States, Thailand |