Radziejowski is a surname. Notable people with the surname include:
Hieronim Radziejowski (1612–1667), exile who led the Swedish to Poland Lucyna Radziejowska (1899–1944), Polish teacher known for lending aid to Jews during World War II Michał Stefan Radziejowski (1645–1705), cardinal Stanisław Radziejowski (1575–1637), politician
See also Radziejów County (Polish: powiat radziejowski)