Climate change is a key threat to agriculture. Modelling is fundamental to assessing its potential impacts. This collection summarises the wealth of research on improving climate impact models and their use in assessing impacts on different regions. Modelling climate change impacts on agricultural systems reviews research on developing models in areas such as improving data flows, incorporating genetic information and dealing with uncertainty. This collection also reviews what we know about potential climate change impacts on regional agricultural systems such, Europe, North America, Latin America, Australia and Oceania, as well as different regions in Asia and Africa.