Olszewski (feminine Olszewska, plural Olszewscy) is a Polish surname.
Notable people with the surname include:
Alfons Olszewski, Polish sailor
Dariusz Olszewski, Polish politician
Eileen Olszewski, American boxer
Jan Olszewski, Polish lawyer and political figure
John A. Olszewski, Jr., American politician
Johnny Olszewski, American football running back
Karol Olszewski, Polish chemist, mathematician and physicist
Krzysztof Olszewski, Polish photographer, visual and installation artist
Paweł Olszewski, Polish economist and politician
Sławomir Olszewski, Polish goalkeeper
Stanisław Olszewski, Polish engineer and inventor
Włodzimierz Olszewski, Polish ice hockey player
