Anna University is a public state university located in Tamil Nadu, India. The main campus is in Chennai. It was originally established on 4 September 1978 and after taking many different forms over the years, as per a September 2020 bill passed in the Tamil Nadu Legislative assembly, the varsity is now reconstituted to be an affiliating university for engineering colleges across Tamil Nadu excluding the engineering colleges that are part of the premier Anna Technological and Research University. The University is now the affiliating authority for close to 550 engineering colleges in Tamil Nadu.