Maciejowski is a Polish surname derived from any of geographical locations derived from the given name Macjej (Maciejów, Maciejówka, etc.).
It may refer to:
- Bernard Maciejowski, 17th-century Bishop of Krakow and Primate of Poland
- Jan Maciejowski, a British electrical engineer
(born 1974, Babice), a Polish painter
- Samuel Maciejowski, 16th-century Bishop of Krakow
- Wacław (Aleksander) Maciejowski (1793–1883), Polish historian
- Michał Maciejowski, Polish fighter ace