Chengalpattu or Chingleput or Chengalpet is a city and a municipality in Kanchipuram district in the state of Tamil Nadu, India. The name of the city is derived from the old nomenclature 'chenkazhuneer patru'. It is because in earlier times a kind of blue coloured lily flowers called 'chenkazhuneer poo' were found aplenty in all water resources of the area. It is the headquarters of the Chengalpattu taluka of Kanchipuram district. It is located on the Palar River about 56 km south-southwest of the city of Chennai (Madras). Chingleput is an important railway junction and commercial center. It has a medical school and other colleges affiliated with the University of Madras.