Surname Iuja (Iuja 
) , around the globe, is a rare last name. The cognomen Iuja is habitual in Romania, where it is quite a rare surname, Georgia, where it is a very rare surname, and Spain, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Romania, Spain, and the United States. Much less frequently, Iuja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Iuja | Romania, Spain, Georgia, United States, India |