Not only is Münster a city which is known as the major centre of the Münsterland region but also as a city that is present on the international and especially European stage. Over the years, Münster has established ten city partnerships (York, Orléans, Kristiansand, Monastir, Rishon LeZion, Fresno, Ryazan, Mühlhausen, Lublin, Enschede), three climate partnerships (Rochester, Monastir and Bologna), a project partnership with Tamale in Ghana and a solidarity partnership with Vinnytsia (Ukraine). In addition, there is a sponsorship with Braniewo (Poland) and a partnership between Münster-Hiltrup and the French town of Beaugency. Each partnership is actively lived, thanks to both civic engagement and the work of the International Office in the City of Münster's Office for Citizens' and Council Services.

Furthermore, the City of Münster is active in European networks, for example EUROCITIES, the Council of European Municipalities and Regions, EUREGIO, MONT, CNC100, ICLEI, Covenant of Mayors. By participating in these networks, the city of Münster plays an active role in shaping Europe’s multicultural identity.

The international work of the city of Münster is complemented by expert delegations from around the globe as well as international project cooperations. Moreover, the International Office is in charge of the Office for Municipal Development Cooperation and the topic "Fairtrade".