Social ontology—the study of the nature and basic structure of the social realm—is currently enjoying a period of sustained growth and development, both as a field of study in its own right and as a project concerned with under-labouring for a variety of different social scientific disciplines including economics. One of the most active streams in this area emanates from Cambridge and a group of researchers operating at the interface between social ontology and heterodox economics whose work is sometimes identified as Cambridge Social Ontology. The central figure in this project is Tony Lawson, whose work has provided much of the impetus for Cambridge Social Ontology over the last thirty years.