Kozlovsky (masculine), Kozlovskaya (feminine), or Kozlovskoye (neuter) may refer to:
Kozlovsky (surname) (Kozlovskaya), a Russian last name 4944 Kozlovskij, a main-belt asteroid
Places in Russia Kozlovsky (rural locality) (Kozlovskaya, Kozlovskoye), multiple rural localities Kozlovskaya, Arkhangelsk Oblast Kozlovsky, Republic of Bashkortostan Kozlovsky, Talovsky District, Voronezh Oblast Kozlovsky District, a district in the Chuvash Republic Kozlovskoye Urban Settlement, composed of Kozlovka and three rural localities in Kozlovsky District
See also Kozlovka (disambiguation), several inhabited localities in Russia Kozłowski, a surname