Surname Phimmason (Phimmason 
) , in the world, is a rare cognomen. The surname Phimmason is characteristic of Laos, where it is quite a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Phimmason is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phimmason | Laos, United States, Thailand |