Kozłowski

Kozłowski (; feminine: Kozłowska, plural: Kozłowscy) is the 12th most common surname in Poland (76,657 people in 2009). It is ranked second in both Warmia-Masuria (7,764) and Podlaskie (5,560) It is related to the following surnames:

{| class="wikitable" ! Language !! Masculine !! Feminine |- | Polish || Kozłowski || Kozłowska |- | Belarusian (Romanization) || (Kazloŭski) || (Kazloŭskaja, Kazlouskaya, Kazlouskaia) |- | Lithuanian || Kazlauskas || Kazlauskienė (married) Kazlauskaitė (unmarried) |- | Russian (Romanization) || (Kozlovsky, Kozlovskiy, Kozlovskij) || (Kozlovskaya, Kozlovskaia, Kozlovskaja) |- | Ukrainian (Romanization) || (Kozlovskyi, Kozlovskyy, Kozlovskyj) || (Kozlovska) |}