Cognomen Кирилл (Кирилл 
, Cyril 
, Kirill , among others...) , all over the world, is a common surname. The surname Кирилл is habitual in North Macedonia, where it is a common surname, Saint Lucia, where it is quite a common surname, and Guadeloupe (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Nigeria, Russia, and North Macedonia. More prevalently, Кирилл is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Кирилл | Russia, United Kingdom, Belarus, United States, France |
| Cyrill, Cyril | Russia, South Africa, Philippines, Nigeria, France |
| Kiril, Kirill | Russia, United Kingdom, South Africa, Philippines, France |
| Cyrillus | South Africa, Philippines, United States, India, France |
| Kirils | Russia, United Kingdom, Spain, Ireland, United States |
| Kyrill | Russia, United Kingdom, Philippines, United States, France |
| Kyryl | Russia, United Kingdom, South Africa, Australia, United States |
Белов, Лебедев, Семенов, Сергеев, Соколов, Сорокин, Сидоров, Смирнов, Тарасов, Романов, Федоров, Яковлев, Кириллов, Кузнецов, Максимов, Михайлов, Алексеев, Гаврилов, Дмитриев, Николаев, Васильев, Степанов, Захаров, Новиков, Никитин, Поляков, Гусев, Попов, Жуков, Орлов, Козлов, Павлов, Петров, Волков, Зайцев, Иванов, Григорьев, Егоров, Ковалев, Киселев, Кузьмин, Макаров, Матвеев, Миронов, Морозов, Андреев, Баранов, Борисов, Фролов, and Колесников