Łukaszewski is a Polish surname. It comes from the given name Łukasz (Lucas).
- 16090 Lukaszewski, a comet
- David Lukaszewski, American poker player
- Ewelina Lukaszewska, Polish actress
- James Lukaszewski, American crisis management consultant
- Paweł Łukaszewski, Polish composer
- Jerzy Łukaszewski, Polish diplomat
- Marcin Łukaszewski, Polish footballer
- Marcin Łukaszewski (musician), Polish composer
- Wiesław Łukaszewski, Polish psychologists
- Witold Łukaszewski, Polish guitarist
- Wojciech Łukaszewski, Polish composer
- Ashley Lukashevsky, American illustrator