Cognomen Narungchai (Narungchai 
) , in the world, is an extremely rare family name. The cognomen Narungchai is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Narungchai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Narungchai | United States, Thailand |