Kozłowski
Kozłowski is the 12th most common surname in Poland. It is ranked second in both Warmia-Masuria and Podlaskie It is related to the following surnames:
| Language | Masculine | Feminine |
| Polish | Kozłowski | Kozłowska |
| Belarusian | Казлоўскі | Казлоўская |
| Lithuanian | Kazlauskas | Kazlauskienė Kazlauskaitė |
| Russian | Козловский | Козловская |
| Ukrainian | Козловський | Козловська |
People
- Artur Kozłowski, Polish athlete
- Artur Kozłowski, Polish speleologist
- Brian Kozlowski, former American football tight end
- David Kozlowski, American professional tennis player and television personality
- Dennis Kozlowski, American businessman, former CEO of Tyco International
- Edward Kozłowski, a Polish-American Catholic Priest, and the first Polish Bishop, in the Roman Catholic Archdiocese of Milwaukee.
- Feliksa Kozłowska, Polish Christian mystic
- Glenda Kozlowski, Brazilian journalist
- , Polish anthropologist
- Joanna Kozłowska, Polish opera singer
- Kacper Kozłowski, Polish sprinter
- Leon Kozłowski, Polish archaeologist and politician who served as Prime Minister of Poland from 1934 to 1935
- Linda Kozlowski, American actress
- Marian Kozłowski, Polish basketball administrator
- Marian Kozłowski, Polish sprint canoeist
- Maciej Kozłowski, Polish actor
- Roman Kozłowski, Polish paleontologist
- Steve Kozlowski, American psychologist
- Tomasz Kozłowski, Polish diplomat