||Models are important means to represent, explore, evaluate, and develop systems, such as interorganizational crisis management (ICM) systems. The objective was to explore how ICM systems are represented in the scientific literature, i.e., how ICM systems are modelled. The study was carried out as a systematic literature review. The results are presented as (1) organizational descriptions or models of ICM systems, (2) functional components of ICM systems, (3) analytical approaches used to model ICM systems, and (4) changes of ICM systems. The results revealed that ICM systems are described in various ways, and that descriptions of models are rather based on entities developed by the authors of the publications than on a common framework for describing ICM systems. The identified information on models, functional components, analytical approaches, and changes of the ICM systems provide important input to future work, e.g. comparing different models to determine their strengths and weaknesses.