Cognomen Dangchai (ดังใจ 
, แดงชัย , Dangchai 
) , across the world, is a rare last name. The last name Dangchai is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Also, Dangchai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| แดงชัย, ดังใจ | Thailand |
| Dangchai | United States, India, Thailand |