The non-profit association "Friends of Mainz University" fosters relationships between the university and citizens, institutions, authorities, and commercial enterprises—even beyond the city and state borders. It maintains and deepens the bond between alumni (students and employees) and their university.

It supplements the state's support for the university in an unbureaucratic manner and helps, among other things, to finance research projects and scientific events, conferences, and excursions, as well as the purchase of equipment and scientific books. It has established the Johannes Gutenberg Endowed Professorship as an independent foundation, which appoints a renowned personality as endowed professor for the summer semester.

It promotes young scientists through research and dissertation awards. It contributes to ensuring that students continue to have excellent conditions for study, teaching, and research in the future.

Founded: 1951
Register of associations: VR 826