Family name Maethus (Maethus 
) , in all the world, is an extremely rare surname. Much more prevalently, Maethus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Maethus | United States, Thailand, Philippines |
Taepattanasat, Tremmel, Sumawong, Bhanuvaisya, Wangsupkitkosol, Lertsethtakarn, Chaivichitmalakul, and Chuaycharoentham