Cognomen ธรรมอำนวยกิจ (ธรรมอำนวยกิจ, Thamumnuaykij 
) , across the world, is an extremely rare last name. The cognomen ธรรมอำนวยกิจ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thamumnuaykij | Thailand |