Januszewski is a surname. Notable people with the surname include:
Artur Januszewski (born 1976), polish footballerFranciszek Januszewski (November 23, 1886 – June 10, 1953), one of the founders of the Józef Piłsudski Institute of AmericaHilary Paweł Januszewski (1907–1945), Carmelite, friar, priest; survived in the camp of Dachau until 1945Paweł Januszewski (born 1972), retired hurdler from Poland