Family name Daehwan (Daehwan 
, 대환 ) , around the globe, is a rare surname. The family name Daehwan is characteristic of South Korea, where it is a rare surname, Chile, where it is an extremely rare surname, and China. Much more prevalently, Daehwan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Daehwan | China, South Korea, United States, Singapore, Japan |
| 대환 | South Korea |