Cognomen มอญเทศ (Monothe 
, มอญเทศ 
) , worldwide, is a very rare family name. The cognomen มอญเทศ is habitual in Thailand, where it is a very rare surname, and South Africa, where it is an extremely rare surname. Much less frequently, มอญเทศ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Monothe | South Africa |
| มอญเทศ | Thailand |