MPM4CPS is a half-day workshop held as part of MODELS 2020. The purpose of this workshop is to bring together researchers and practitioners in the area of Multi-Paradigm Modelling (MPM) (specifically applied to developing Cyber-Physical Systems) in order to identify possible points of synergy, common problems and solutions, tool building aspects and the vision for the future of the area. We welcome (mature and early-stage) research results to be presented at the workshop. Additionally, we solicit topics for out-of-the-box presentations, which are not deeply researched yet, but can lead to new insights, discussions, and future collaborations. Participants are allowed to give a “lightning talk” on a topic related to MPM that can jump-start the discussions.