Surname มานะธรรม (มานะธรรม 
, Manatham 
) , in the entire world, is quite a rare last name. The last name มานะธรรม is characteristic of South-eastern Asia, particularly Laos, where it is quite a common surname, and Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| มานะธรรม | Thailand |
| Manatham | Laos, Thailand, United States |