The University of Sydney (USYD, or informally Sydney Uni) is a public research university located in Sydney, Australia. Founded in 1850 as Australia's first university, it is regarded as one of the world's leading universities. The university is one of Australia's six sandstone universities. The university comprises eight academic faculties and university schools, through which it offers bachelor's, master's, and doctoral degrees. The QS World University Rankings ranked the university as one of the world's top 25 universities for academic reputation, and top 4 in the world, and the first in Australia for graduate employability. It is one of the first universities in the world to admit students solely on academic merit and opened its doors to women on the same basis as men.

Five Nobel and two Crafoord laureates have been affiliated with the university as graduates and faculty. The university has educated eight Australian prime ministers, including incumbent Prime Minister Anthony Albanese, two governors-general of Australia, thirteen Premiers of New South Wales including incumbent Premier Dominic Perrottet, and 24 justices of the High Court of Australia, including four chief justices. The university has produced 110 Rhodes Scholars and 19 Gates Scholars. The University of Sydney is a member of the Group of Eight, CEMS, the Association of Pacific Rim Universities, and the Association of Commonwealth Universities.