Surname Grasun (Grasun 
) , all over the world, is a very rare last name. The surname Grasun is habitual in Romania, where it is a rare surname, Spain, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Grasun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grasun | Romania, United States, India, Spain |