Cognomen Caygan (Caygan 
) , in the entire world, is a very rare family name. The last name Caygan is habitual in Philippines, where it is a very rare surname, Canada, where it is an extremely rare surname, and Turkey. Much less frequently, Caygan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Caygan | Canada, Turkey, United States, Philippines |