The HCCH cooperates with both university and non-university partners on various levels. This makes it possible to develop interdisciplinary courses, plan exhibitions and public relations measures and prepare joint research projects. In order to institutionalize these cooperations, cooperation contracts have also been concluded with a number of external institutions, such as the Lobdengau Museum in Ladenburg (2015), the Generaldirektion Kulturelles Erbe des Landes Rheinland-Pfalz (the General Directorate for Cultural Heritage in Rhineland-Palatinate (2016) and the municipality of Friesenheim-Schuttern (2017). Further cooperation projects are conducted with associated members of the HCCH on a per-project basis. This also results in numerous contacts and a lively exchange of knowledge with colleagues from all over the world.
Within Heidelberg University, the HCCH works closely with Collaborative Research Center 933 (Material Text Cultures) and Heidelberg University Library on various projects. These main purpose of these measures is to reach a wider audience. Furthermore, the HCCH cooperates with the Heidelberger Forum Edition initiative, which places the various editing, commentary and translation projects of Heidelberg University, the Heidelberger Akademie der Wissenschaften (Heidelberg Academy of Sciences and Humanities) and the Hochschule für Jüdische Studien (Heidelberg College for Jewish Studies) in the context of a joint discussion and communicates them to academics and the public.
There is also wide-ranging cooperation with regard to the activities of the individual members of the HCCH. Two examples are the joint organization of a career information evening for university students together with the Institut für Europäische Kunstgeschichte (Institute for European Art History), and the joint organization of BOGY internships together with the Zentrum für Altertumswissenschaften (Centre for Studies of the Ancient World) every year. Participation in the KinderUni (Children’s University) is supported by colleagues from at least five institutes.