The MAZEM – Mannheim Center for Empirical Multilingualism Research (in German: Mannheimer Zentrum für Empirische Mehrsprachigkeitsforschung) in Mannheim, Germany is an linguistic and social research institute and member of the University of Mannheim. Under the leadership of Sonja Withopf, president of the Institute, MAZEM employs a staff of about 50 researchers and support staff. The MAZEM was established in Mannheim in 2011 and is still headquartered there. It is the central state-aided institution for conducting interdisciplinary linguistic research activities in the fields of language contact at the Mannheim School of Humanities, which was founded in 2011 as a non-profit company (NGO). It is registered under the legal form of a gGmbH.