Surname Leontiev (Леонтьев 
, Leontiev 
, Леонтиев ) , across the world, is a common last name. The family name Leontiev is habitual in Russia, where it is quite a common surname, Kazakhstan, where it is quite a rare surname, and Moldova. Measured by absolute frequency, this name is the most popular in Russia, Kazakhstan, and Belarus.
| VARIANT | COUNTRY |
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| Леонтьев | Ukraine, Kazakhstan, Uzbekistan, Belarus, Russia |
| Leontiev | Moldova, Slovakia, Bulgaria, Poland, United States |
| Леонтиев | Russia |
| Леоньтьев | Russia, Ukraine |
| serghei leontiev Transnistrian politician, MD (b. 1944) |
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| sergey leontiev chess player (b. 1953) |
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| aleksandr v. leontiev chess player (b. 1974) |
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| stanislav leontiev Russian tenor soloist, RU (b. 1975) |
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| yaroslav leontiev (b. 1966) |
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| alexander leontiev researcher ORCID ID = 0000-0001-6378-615X, RU |
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| viktor leontiev researcher |
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| yuri leontiev Ph.D. University of Alberta 1999 |
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| boris ivanovitch leontiev - 1576/1579 |
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| rostislav leontiev Ph.D. St. Petersburg State University 1990 |
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| andrej leontiev (b. 1976) |
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| leontiev çuçi |
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Mr, Marie, Marta, Margo, Maxim, Slava, Andre, Anton, Artem, Boris, Pavel, Roman, Denis, Denys, Danil, David, Greta, Lidya, Lyuba, Jason, Tracy, Vadim, Yury, Irina, Yura, Oleg, Ros, Lev, Jul, Ion, Mike, Serg, Stan, Alex, Aleg, Anna, Gina, Lisa, Jane, Nina, Erik, Vera, Vlad, Ilya, Ivan, Igor, Ihor, Yuri, and Yulia