In this review essay, I introduce and map the field of what I call "design sociology". I argue that design research methods have relevance to a wide range of sociological research interests, and particularly for applied research that seeks to understand people's engagements with objects, systems and services, better engage publics and other stakeholders, work towards social change, and identify and intervene in futures. I discuss 3 main ways in which design sociology can be conducted: the sociology of design, sociology through design and sociology with design. I explain key terms in design and dominant approaches in social design research-participatory, critical, adversarial, speculative, and ludic design. Examples of how sociologists have already engaged with design research methods are outlined. The essay concludes with suggestions about what the future directions of design sociology might be.