Trojanowski is a Polish masculine surname, its feminine counterpart is Trojanowska. Its Russian and Ukrainian versions (, ) are transliterated as Troyanovsky, Troyanovski, Troyanovskyi, Troianovski (masculine) or Troyanovskaya (feminine). It may refer to: Anton Troianovski (born 1985), Soviet-born American journalist Daniel Trojanowski (born 1982), Polish rower Eduard Troyanovsky (born 1980), Russian boxer Izabela Trojanowska (born 1955), Polish singer and film actress John Q. Trojanowski (1946-2022), American scientist Mieczyslaw Rys-Trojanowski (1881–1945), Polish general Oleg Troyanovsky (1919–2003), ambassador of the Soviet Union to Japan and China Tadeusz Trojanowski (1933–1997), Polish wrestler Wincenty Trojanowski (1859–1928), Polish painter Yevhen Troyanovskyi (born 1993), Ukrainian football player Zdzisław Trojanowski (1928-2006), Polish ice hockey player Polish-language surnames