IJCLab is a major player in global research in several scientific fields. This translates into numerous international collaborations, and participation in European, national and regional projects.

In 2020, IJCLab takes part in more than ten projects funded by the European Commission, ten projects of the French National Research Agency, ten international collaborations of the CNRS, in ERASMUS+ actions of Paris-Saclay University, to SESAME projects in the Ile-de-France Region, to programs funded by CNES, INSERM, ANDRA.