Family name Bonghan (Bonghan 
) , in all the world, is a very rare last name. The cognomen Bonghan is characteristic of Thailand, where it is an extremely rare surname, the United States, and China. More frequently, Bonghan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bonghan | Thailand, China, South Korea, United States |