Chapter 13 deals with the set of methods related to participatory modelling, which refers to settings where non-scientist stakeholders are involved in any of the stages of the modelling process of their social-ecological systems (SES). The chapter discusses system dynamics models, agent-based models, role-playing games, expert models, state-and-transition models, soft system methodologies, collaborative modelling, companion modelling and participatory system analysis as major types of participatory modelling methods used in SES research. It goes on to discuss the types of SES problems and research questions commonly addressed by this set of methods, as well as their limitations, resource implications and new emerging research directions. The chapter also includes an in-depth case study showcasing the application of participatory modelling methods, and suggested further readings.