SIM University (UniSIM) was a private university in Singapore that opened in 2005 before shutting down in 2017. The university was established and managed under the Singapore Institute of Management (SIM) Group. It was the only private university in Singapore after Nanyang University. The university practiced an open-door academic policy towards working adults and offered only part-time programmes. Between 2010 and 2017, UniSIM was registered under the Committee for Private Education (CPE).

Nanyang University (南洋大學) was a private university in Singapore between 1956 and 1980. During its existence, it was Singapore's only private university in the Chinese language. In 1980, Nanyang University was merged with the University of Singapore to form the National University of Singapore (NUS). It was only until 2005 that another private school in Singapore, SIM University, was established.