The Johannes Gutenberg University Mainz (JGU) is a public research university in the city of Mainz, Germany. It was founded in 1477 and is one of the oldest universities in Germany. Following its re-establishment in 1946, it has grown to become one of the largest universities in the country, with over 32,000 students. JGU is situated in the picturesque Rhineland-Palatinate region, offering a unique campus experience that combines historic charm with modern amenities. The university is spread across several campuses in Mainz, with the main campus located in the city centre. The campus environment is a blend of urban and suburban, providing students with easy access to the city's cultural attractions and natural surroundings.

JGU is a comprehensive university offering a wide range of academic disciplines through its 11 faculties. These include the humanities, social sciences, natural sciences, medicine, law, business and the arts. The university is particularly renowned for its strong programmes in physics, chemistry and life sciences. In addition, JGU is home to several specialised research centres and institutes, such as the Mainz Academy of the Arts and the Institute for Molecular Biology.

JGU has consistently performed well in national and international rankings. In the QS World University Rankings, JGU is ranked 464th, while in the Times Higher Education World University Rankings, it is placed between 251st and 300th. In the 2022 Shanghai Rankings (ARWU), JGU is positioned between 201st and 300th globally and between 10th and 19th in Germany. The university has also been recognised by the German Research Foundation (DFG) as one of the best universities in Germany for the natural sciences, particularly in the field of physics. Notable JGU alumni and faculty members include German political scientist Kai Arzheimer, theologian Herbert Braun and economist Klaus Rose. The university is also known for its involvement in various research projects, such as the development of a miniature Mössbauer spectrometer carried by the Mars Exploration Rovers Spirit and Opportunity. JGU's commitment to internationalisation and diversity sets it apart. With students from over 120 countries, the university fosters a vibrant multicultural environment. JGU maintains an extensive network of international partnerships and offers a range of international degree programmes, including bi- and tri-national degrees. This global outlook, combined with its rich history and academic excellence, makes JGU a unique and attractive destination for students from around the world.