Family name Martheyn (Martheyn 
) , around the globe, is a rare last name. The cognomen Martheyn is habitual in Colombia, where it is a rare surname, Venezuela, where it is a very rare surname, and Canada, where it is an extremely rare surname. Very seldom, Martheyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Martheyn | Canada, United States, Colombia, Venezuela |