The article begins by exploring what is meant by a popular public theology drawing on the work of the missiologist Werner Ustorf. A popular public theology refers to the informal and unofficial theological speech of society, distinct from the more formal theology of the Church and academy. Such popular public theology is found in contemporary culture, albeit often in diffuse and incoherent form. It is then argued that a popular public theology has an inbuilt relevance to the concerns of society, avoids problems associated with public theologians needing to be fluent in more than one academic discourse, and is not in danger of being reliant on the social sciences. Finally, it is suggested that by discussing the implications of cultural theological statements, public theologians are able to contribute critically to social and political debates.