Agricultural College and Research Institute (AC & RI), Vazhavachanur, Thiruvannamalai district is a new constituent college of Tamil Nadu Agricultural University, Coimbatore. It was started and functioning since 25.08.2014. It is located on Thiruvannamalai to Kallakuruchi State Highways (SH 6) at 22 km South of Thiruvannamalai town. This residential campus is offering four years B.Sc., Agriculture /B.Sc., (Hons) Agriculture degree programme, with an allotted strength of 80 students per Batch. An area of 110 acres from the state seed farm Vazhavachanur has been allotted to this new college, which includes wet land and garden land ecosystems with bore well irrigation facility and canal irrigation system. Thenpennai river running south of the location is the main source of water for the irrigated crops.