Konstantynów Łódzki is a town in Pabianice County, Łódź Voivodeship, Poland, with 18,335 inhabitants (2020). It borders Łódź to the east, Lutomiersk to the west, Aleksandrów Łódzki to the north, and Porszewice to the south. It was founded in the 1820s by a landowner who had planned to build a textile industry there. It was incorporated in 1924. In 1821 Konstantynów Łódzki, at that time still a village, became a part of the textile industry of the Łódź region. Shortly thereafter, in 1824 the town was given its current name and was established as a town in 1830.

Notable residents