In the context of the encounter of UK and German socio-legal studies in this issue, this Article develops preliminary thoughts on a research agenda for the comparative interdisciplinary empirical study of legal doctrine. Based on a working definition of doctrine as an institutionally legitimized practice of making statements on the law, it presents an overview of sociological and comparative theorizing about doctrine in Germany, and of the data and methods being used to study it, in order to identify similar or diverging trends in the UK and elsewhere. This Article aims to show that legal doctrine, which is often regarded by non-lawyers as arcane and/or tedious, is an interesting and important subject for comparative socio-legal research.