Surname Señan (Señan 
) , across the world, is a very rare family name. The last name Señan is characteristic of Spain, where it is a very rare surname, and Chile, where it is an extremely rare surname. More frequently, Señan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Señan | Chile, Spain, Argentina |
| josé francisco de paula señan Spanish missionary (b. 1760) |
|