Konstantynów Łódzki is a town in Pabianice County, Łódź Voivodeship, Poland, with 17,892 inhabitants. 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 Łódź region. Shortly thereafter, in 1824 the town was given its current name and was established as a town in 1830.
Coordinates 51°44'51.197" N 19°19'31.842" E