The University of Hamburg (German: Universität Hamburg, also referred to as UHH) is a public research university in Hamburg, Germany. It was founded on 28 March 1919 by combining the previous General Lecture System (Allgemeines Vorlesungswesen), the Hamburg Colonial Institute (Hamburgisches Kolonialinstitut), and the Academic College (Akademisches Gymnasium). The main campus is located in the central district of Rotherbaum. With affiliated institutes and research centres distributed around the city-state.

The institution is among the top 200 universities in the world according to the Times Higher Education Shanghai Ranking. And the CWTS Leiden Ranking, placing it among the top 1% of global universities. UHH has ties to seven Nobel laureates and one Wolf Prize recipient.

On a national scale, U.S. News & World Report ranks UHH 7th and QS World University Rankings 14th out of a total of 426 German institutions of higher education.