Surname Radain (Radain 
) , across the world, is a rare last name. The family name Radain is characteristic of Saudi Arabia, where it is a rare surname, Canada, where it is an extremely rare surname, and Mexico. Much less frequently, Radain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Radain | Saudi Arabia, Canada, India, Mexico, United States |