Cognomen Kirillovs (Kirillovs 
) , all over the world, is a rare surname. The last name Kirillovs is characteristic of Northern Europe, particularly Latvia, where it is quite a common surname, Estonia, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Very seldom, Kirillovs is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kirillovs | Estonia, Spain, United Kingdom, United States, Latvia |