Last name Alstun (Alstun 
) , in all the world, is an extremely rare family name. The cognomen Alstun is characteristic of Georgia, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Alstun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alstun | India, Georgia, United States |