Last name Kiayias (Kiayias 
) , across the world, is a very rare surname. The surname Kiayias is characteristic of Cyprus, where it is quite a rare surname, Australia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kiayias | Australia, United Kingdom, Cyprus |
| aggelos kiayias Greek cryptographer and computer scientist |
|