Family name มสาร (Masan 
, มสาร 
) , all over the world, is quite a rare cognomen. The cognomen มสาร is habitual in Oman, where it is quite a rare surname, Slovakia, and Israel. Measured by absolute frequency, it is the most numerous in Indonesia, India, and Philippines. More frequently, มสาร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Masan | Japan, Indonesia, Philippines, India, Myanmar |
| มสาร | Thailand |