Family name หาญไวทยะกิจก (หาญไวทยะกิจก 
) , throughout the world, is a very rare cognomen. The surname หาญไวทยะกิจก is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| หาญไวทยะกิจก | Thailand |