Ostrowski is a Polish surname
Ostrowski may also refer to:
Ostrowski Prize, a mathematics award Kazimierz Ostrowski Award, given to Polish artists and designers Ostrów County, Masovian Voivodeship, Poland (Polish: powiat ostrowski) Ostrów County, Greater Poland Voivodeship, Poland (Polish: powiat ostrowski)
See also Ostrowski numeration, a numeral representation numbers Ostrowski's theorem, a mathematical theorem Ostrovsky (disambiguation)