Jan Zawiejski, born Jan Baptysta Feintuch, (born 20 June 1854, Kraków – died 9 September 1922, Kraków) was a Polish architect from an assimilated Polish-Jewish family, a representative of the 19th-century historicism advocating for a return to classical design of the past.

Zawiejski was born on 20 June 1854 in Kraków, located at that time in the Austrian partition.

He worked as a professor at the Kraków School of Commerce (Krakowska Szkoła Przemysłowa) and collaborated with the Architekt and Nowa Reforma magazines.

[1][2] His most notable design works in Kraków include Juliusz Słowacki Theatre (1889-1893), School of Economics (1904–1906), Ohrenstein House at the corner of Stradom and Dietla streets built for Moshe Löbel Ohrenstein and his wife Reizel Wald (1911–1913), Turnaus' Townhouse at the corner of Siemiradzki and Łobzowska Streets (1889–1891) and the architect's own house, the so-called Jasny Dom (The Bright House) built 1909–1910.

Between 190 and 1013, he supervised the reconstruction of the Wielopolski Palace, seat of the Kraków City Council.