The National University of Singapore (Abbreviation: NUS) is one of the three largest public and autonomous universities in Singapore. Founded in 1905, it is the oldest institute of higher learning (IHL) in Singapore, as well as the largest university in the country in terms of student enrolment and curriculum offered. NUS is a research-intensive, comprehensive university with an entrepreneurial dimension.

NUS is consistently ranked as one of Asia's top universities by both UK ranking systems, the QS World University Rankings and the Times Higher Education World University Rankings. According to the latest 2015 QS World University Rankings, NUS is ranked 12th in the world and retained its position as 1st in Asia. NUS also fared well in the 2015-16 Times Higher Education World University Rankings, coming in 26th in the world and 1st in Asia.[4] Additionally, 2014's U.S. News & World Report Best Global Universities Rankings places NUS at 55th in the world. In 2015, The Economist ranked NUS Business School 2nd in Singapore and 87th globally.

NUS's main campus is located in southwest Singapore at Kent Ridge, with an area of approximately 1.83 km2 (0.71 sq mi. The Bukit Timah campus houses the Faculty of Law, Lee Kuan Yew School of Public Policy and research institutes, while the Duke-NUS Graduate Medical School Singapore is located at the Outram campus.