Jan Zawiejski, born Jan Baptysta Feintuch, (1854–1922) was a Jewish, Polish architect, representative of historism.
His most notable design works include Juliusz Słowacki Theatre, Ohrenstein House at corner of Stradom and Dietla Street it was build for Moshe Löbel Ohrenstein & his wife Reizel Wald in Kraków (1889–1893), Stary Dom Zdrojowy in Krynica (1884–1889; with Jan Niedzielski), School of Economics in Kraków (1904–1906) and his own house building, so-called Dom Jasny in Kraków (1909–1910).
Zawiejski was born on June 20, 1854 in Kraków, Poland. In the years of 1872–1873 he studied in Munich and 1873–1878 at the polytechnic in Vienna. In 1900 became a city architect of Kraków.
He died on September 9, 1922 in Kraków. Buried at the Rakowicki Cemetery.