Surname รุ่งรัช (Rungrat 
, Rungratch , รุ่งรัช) , all over the world, is a rare cognomen. The last name รุ่งรัช is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is a very rare surname. More prevalently, รุ่งรัช is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rungrat | Denmark, Thailand, United Kingdom, United States, Malaysia |
| Rungratch | Thailand, United States |