Surname Semsen (Semsen 
) , across the world, is a very rare family name. The surname Semsen is characteristic of Greenland, where it is quite a common surname, Denmark, where it is a rare surname, and Thailand, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Thailand, Greenland, and the United States. Much less frequently, Semsen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Semsen | Denmark, United States, Thailand, Greenland, India |