Cognomen Yourdan (Yourdan 
) , worldwide, is a rare surname. The cognomen Yourdan is characteristic of Indonesia, where it is a very rare surname, the United States, where it is an extremely rare surname, and Venezuela. More frequently, Yourdan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yourdan | Indonesia, Venezuela, United States, Peru, Taiwan |