Cognomen Ciy (Ciy 
) , in the entire world, is a rare family name. The last name Ciy is habitual in Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and Germany, where it is an extremely rare surname. Much less frequently, Ciy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ciy | Malaysia, India, Indonesia, Thailand, Germany |