Cognomen วงษ์กล้าหาญ (วงษ์กล้าหาญ, Wongklahan 
) , in the entire world, is a very rare family name. The cognomen วงษ์กล้าหาญ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Wongklahan | Thailand |