Kozłówek [kɔˈzwuvɛk] is a village in the administrative district of Gmina Tarłów, within Opatów County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 4 kilometres (2 mi) south-west of Tarłów, 27 km (17 mi) north-east of Opatów, and 77 km (48 mi) east of the regional capital Kielce.