Family name Thosen (Thosen 
) , around the world, is a rare last name. The cognomen Thosen is characteristic of Thailand, where it is a very rare surname, Switzerland, and Indonesia. Not in comparison with a country's population, the name is most common in Thailand, Indonesia, and India. Very seldom, Thosen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thosen | Indonesia, Nigeria, United States, Thailand, India |