The University of South Australia (UniSA) was Australia's University of Enterprise. With more than 37,000 students and 2,900 staff, it was South Australia's largest university and one of the very best young universities in the world. UniSA was a public research university based in Adelaide, South Australia, established in 1991 and disestablished on 31 March 2026 when it merged with the University of Adelaide to form Adelaide University.