An open university is a university with an open-door academic policy.

Open university may also refer to specific organizations:

• The Open University (OU), a public distance-learning and research university based in the United Kingdom
• Open University of Diversity, headquarters of Belgian artist Koen Vanmechelen
• The Open University of Japan, formerly known as the University of the Air
• Open University Press, an academic publisher now owned by McGraw-Hill Education
• Bangladesh Open University, an open public university of Bangladesh.
• Sex Worker Advocacy and Resistance Movement, formerly known as Sex Worker Open University

• List of open universities
• Open College (disambiguation)