Surname Thedsen (Thedsen 
) , in all the world, is an extremely rare family name. The family name Thedsen is characteristic of Thailand, where it is an extremely rare surname, and Brazil. Very seldom, Thedsen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thedsen | Brazil, Thailand |
| otto thedsen DE (b. 1886) |
|