The University of Portsmouth is a public university in Portsmouth, England. Comprising five faculties, the university offers a wide range of academic disciplines. With around 28,280 students enrolled in undergraduate and postgraduate programs, the university in 2022 was the 25th-largest higher education institution by student enrolment in the United Kingdom. The university employed approximately 3,500 staff in 2020.

Portsmouth was rated #651 in the world by QS World University Rankings in 2024, in the top 501–600 universities by the Times Higher Education World University Rankings 2022, #901-1,000 by Shanghai Ranking, and #908 in the world by CWUR rankings. In the 2023 edition of the Good University Guide – compiled by The Times and The Sunday Times – the university ranked 62nd out of the 132 universities in the United Kingdom. It is one of five universities in the South East of England to have been awarded the highest rating of Gold in the 2023 Teaching Excellence Framework. In the Times Higher Education REF ranking, the university was ranked third in research power for modern post-1992 universities.

In the 2021 edition of the Research Excellence Framework, 77 percent of research submitted by the university was ranked as world-leading or internationally excellent, with impacts across society, health, culture, and the environment.