Tomashevsky or Tomashevskiy, feminine: Tomashevskaya is a Russian surname derived from the Polish surname Tomaszewski. Notable people with the surname include:
(1894–1956), Soviet general (1890–1926), Russian imperial and Soviet military and test pilot Boris Tomashevsky (1890–1957), Russian literary scholar and historian Evgeny Tomashevsky (born 1987), Russian chess grandmaster Lidia Tomashevskaya (born 1995), Russian chess player
See also
Thomashefsky