Mostowski
Mostowski (feminine: Mostowska, plural: Mostowscy) is a surname. It may refer to:
- Mostowski Palace (Polish: Pałac Mostowskich), an 18th-century palace in Warsaw
- Andrzej Mostowski (1913 - 1975), a Polish mathematician
- Mostowski collapse lemma, in mathematical logic
- Ehrenfeucht–Mostowski theorem, in model theory
- Mostowski model in set theory