Leontyev
Leontyev, Leontief, Leontiev, Leontjew, Leontjev, or Leont'ev and Leontyeva is a Russian surname. Notable people with the surname include:
- Alexei Leontyev, Soviet mathematician
- Alexei Leontyev, one of the first Russian sinologists
- Aleksei N. Leontiev, Soviet psychologist, the founder of activity theory
- Aleksei A. Leontiev, Soviet psychologist and linguist, one of the founders of the Soviet psycholinguistics, the son of Aleksei N. Leontiev
- Konstantin Leontiev, Russian philosopher
- Lev Leontiev, Soviet economist
- Mikhail Leontiev, Russian reporter working for Channel One
- Oleg Leontyev, Soviet geomorphologist
- Sergei Leontiev, Russian politician
- Valentina Leontieva, Soviet TV anchor
- Valery Leontiev, Russian pop singer
- Wassily Leontief, economist
