Cognomen Румянцев (Румянцев 
, Rumiantsev 
, Rumyantsev 
, among others...) , all over the world, is a common last name. The cognomen Румянцев is characteristic of Russia, where it is quite a common surname, Estonia, and Belarus, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Eastern Europe, particularly Russia, Ukraine, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Румянцев | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| Rumiantsev | Russia, United States, Ukraine, Poland |
| Rumyantsev | Romania, Estonia, Belarus, Russia, United States |
| Rumjanzew | Germany |
| Rumjancev | Latvia, Germany, Hungary |
| Roumiantsev | Germany, Canada, Belarus, Russia, United States |
| Rumjantsev | Estonia, Finland, Belarus, Lithuania, United Kingdom |
Rumiancev, Rumiantcev, Rumyancev, and Рум'Янцев
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румянцев александр иванович Russian diplomat and military commander, RU (b. 1680) |
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пётр румянцев Field Marshal of Russia (1725-1796), MD (b. 1725) |
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румянцев, михаил петрович Russian general, RU (b. 1751) |
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николай петрович румянцев Prime Minister of Russian Empire (1754-1826), RU (b. 1754) |
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сергей петрович румянцев Russian diplomat, senator and philanthropist, RU (b. 1755) |
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| василий егорович румянцев Russian archaeologist, RU (b. 1822) |
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румянцев, иван петрович Soviet politician and military officer, RU (b. 1885) |
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румянцев, алексей всеволодович RU (b. 1889) |
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михаил николаевич румянцев Soviet clown, RU (b. 1901) |
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| румянцев, иван алексеевич RU (b. 1841) |
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| пётр васильевич румянцев RU (b. 1859) |
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румянцев, валентин витальевич Russian scientist, RU (b. 1921) |
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андрей григорьевич румянцев Soviet writer and poet, RU (b. 1938) |
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румянцев, александр юрьевич Russian nuclear physicist, RU (b. 1945) |
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румянцев, александр григорьевич Russian politician, RU (b. 1947) |
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