Last name Кастин (Kastin 
, Kastine 
, Kastyn ) , in all the world, is a rare surname. The last name Кастин is habitual in Indonesia, where it is a rare surname, Germany, where it is a very rare surname, and the United States. Much less frequently, Кастин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kastin | Germany, Indonesia, Malaysia, United States, India |
| Kastine | South Africa, United States, Philippines |
| Kastyn | United States, Philippines |
| Кастин | Russia |