Cognomen Kim Cương (Kim Cương 
, 金剛 
) , across the world, is a very rare last name. The last name Kim Cương is characteristic of South-eastern Asia, particularly Vietnam, where it is a very rare surname. Also, Kim Cương is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kim Cương | Japan, Vietnam |
| 金剛 | China |