Last name Ковалев (Ковалев 
, Kovalev 
, Kovalyov 
) , all over the world, is a widespread family name. The cognomen Ковалев is characteristic of Belarus, where it is a common surname, Russia, where it is quite a common surname, and Kazakhstan (explore the name in all countries).
| VARIANT | COUNTRY |
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| Ковалев | Kazakhstan, Belarus, Ukraine, Kyrgyzstan, Russia |
| Kovalev | Belarus, United States, Germany, Lithuania, Russia |
| Kovalyov | Belarus, United States, Germany, Azerbaijan, Russia |
| Kovaliov | Belarus, United States, Ukraine, Lithuania, Russia |
| ковалев, николай григорьевич UA (b. 1921) |
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| юрий фёдорович ковалев Russian footballer (1934-1979), RU (b. 1934) |
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| олег васильевич ковалев Russian entomologist (1937–2019) (b. 1937) |
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ковалев алексей иванович Ukrainian businessman. Collaborator and hero, UA (b. 1989) |
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| ковалев александр семенович physicist-theorist, UA (b. 1945) |
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| ковалев, геннадий иванович Soviet biathlete, RU (b. 1945) |
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| ковалев, виктор антонович Russian political scientist, RU (b. 1965) |
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| ковалев, михаил яковлевич BY (b. 1959) |
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| сергей ковалев association football player, RU (b. 1972) |
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| виктор ковалев Kazakhstani footballer, KZ (b. 1980) |
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