Cognomen Юан (Juan 
, Yuan , Iuan 
) , across the world, is a prevalent surname. The cognomen Юан is characteristic of Mexico, where it is a prevalent surname, Nicaragua, and Spain (explore the name in all countries). In absolute terms, it is the most numerous in Mexico, China, and Spain. Also, Юан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Juan, Yuan | China, Spain, Mexico, Colombia, Argentina |
| Iuan | China, Spain, United States, Argentina, Peru |
| Юан | Kyrgyzstan, Armenia, Russia, Ukraine |