Konstantynów Łódzki [kɔnstanˈtɨnuf ˈwut͡skʲi] is a town in Pabianice County, Łódź Voivodeship, Poland, with 17,569 inhabitants (2004). It was incorporated in 1924, but was 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, became a part of the textile industry of the Łódz region. Shortly thereafter, in 1824 the town was given its current name and was established as a town in 1830.
Coordinates: 51°45′N 19°20′E / 51.750°N 19.333°E / 51.750; 19.333