Last name Rorian (Rorian 
) , all over the world, is a rare family name. The cognomen Rorian is characteristic of Tanzania, where it is a rare surname, Greece, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Much less frequently, Rorian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rorian | United States, Tanzania, Greece, Brazil, Venezuela |