Spatial clustering is a topic of growing interest in many disciplines, from geoscience to epidemiology. In recent years, many new advances have appeared, particularly in the area of Bayesian cluster modelling. However, much of this work has been scattered in disparate areas of the literature. This book provides, in one integrated volume, a review of the state-of-the-art in spatial clustering and spatial cluster modelling. Organized in three sections, it includes an overview of the field and its applications, discussions of the theoretical underpinnings of methodology, and explorations of spatio-temporal cluster modelling, all written by leading researchers in the field.