Konstantynów Łódzki [kɔnstanˈtɨnuf ˈwut͡skʲi] is a town in Pabianice County, Łódź Voivodeship, Poland, with 17,569 inhabitants (2004). It was incorporated in 1924, but originally founded in the 1820s by a landowner who had planned to build a textile industry there. In 1821 Konstantynów Łódzki, at that time still a village, officially became a part of the textile industry of the Łódz region.