Cognomen Kiriacou (Kiriacou 
) , around the world, is a very rare surname. The cognomen Kiriacou is characteristic of Cyprus, where it is quite a rare surname, Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Kiriacou is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kiriacou | United Kingdom, Cyprus, Canada, United States |