Family name สมุทรโสภณ (สมุทรโสภณ 
) , in all the world, is an extremely rare cognomen. The last name สมุทรโสภณ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, สมุทรโสภณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมุทรโสภณ | Thailand |