Last name ส้มโอ (Somro 
, Somot 
, Som O 
) , in the entire world, is quite a common cognomen. The last name ส้มโอ is characteristic of Pakistan, where it is quite a rare surname, United Arab Emirates, and Saudi Arabia, where it is a rare surname. Very seldom, ส้มโอ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Somro | Saudi Arabia, United Arab Emirates, Thailand, India, Pakistan |
| Somot | India, France, Malaysia, Philippines |
| Som O | Laos, Thailand |
Grapeekhet, Oangsopha, Oangsumarin, Orangi, Orankichalearn, Oroeng, Pomagool, Pomaloy, Pomaocha, Pomarad, Pomarint, Pomat, Pomeang, Pomel, Pomesopa, Pomesri, Pometap, Pometo, Pommasut, Pomrane, Pomrose, Pomrot, Pomsut, Pomyucol, Som-O, Somloei, Sompau, Sompott, Somsoed, Somtao, Somtou, and Somyotree