Family name Crastan (Crastan 
) , around the globe, is a very rare surname. The surname Crastan is habitual in Italy, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Crastan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Crastan | United States, Italy |
| valentin crastan Swiss engineer and professor em., CH (b. 1932) |
|