Leontyev, Leontief, Leontiev, Leontjew, Leontjev, or Leont'ev () and Leontyeva (Леонтьева; feminine) is a Russian surname. Notable people with the surname include:
* Alexei Leontyev (1917–?), Soviet mathematician
* Alexei Leontyev (1716–1786), one of the first Russian sinologists
* Aleksei N. Leontiev (1903–1979), Soviet psychologist, the founder of
activity theory
Activity theory (AT; ) is an umbrella term for a line of eclectic social-sciences theories and research with its roots in the Soviet psychological activity theory pioneered by Sergei Rubinstein in the 1930s. It was later advocated for and popula ...
Transnistria
Transnistria, officially known as the Pridnestrovian Moldavian Republic and locally as Pridnestrovie, is a Landlocked country, landlocked Transnistria conflict#International recognition of Transnistria, breakaway state internationally recogn ...
Valery Leontiev
Valery Yakovlevich Leontiev (; born 19 March 1949) is a Soviet and Russian pop singer, sometimes songwriter and actor, whose popularity peaked in the 1980s and 1990s. He was titled a People's Artist of Russia in 1996.Viktor Leontyev (born 1940), Soviet Olympic gymnast
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Wassily Leontief
Wassily Wassilyevich Leontief (; August 5, 1905 – February 5, 1999) was a Soviet-American economist known for his research on input–output analysis and how changes in one economic sector may affect other sectors.
Leontief won the Nobel Memo ...