Last name Christiian (Christiian 
) , around the world, is a very rare surname. The last name Christiian is characteristic of Nigeria, where it is an extremely rare surname, Canada, and Argentina. Not in comparison with a country's population, it is commonest in Nigeria, the United States, and Mexico. More frequently, Christiian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Christiian | Philippines, Colombia, United States, Nigeria, France |