Cheyyur (Tamil: [sɛjjuːr]), is a town in Chengalpattu district in the Indian state of Tamil Nadu. Cheyyur is surrounded by four sub-areas: North, East, South and West Cheyyur. The town has a Taluk Office (administrative offices) and a regional treasury centre. It is the administrative capital of the taluka of Cheyyur and it is the seat of the Member of Legislative assembly of Cheyyur Constituency in Tamil Nadu State. Cheyyur also host the District Munsif-cum-Judicial Magistrate Court. Cheyyur also is supported by the Fire and Rescue Station and a Police Station under the Superindent of Police, Chengalpattu. There is a taluka government hospital and a veterinary hospital available in the town.