This paper presents a summary of the research on teacher (and preservice teacher) content knowledge within physical education teaching and teacher education. It is organized around the key terms that are predominant in the literature of this field, namely, content knowledge, common content knowledge, and specialized content knowledge. Each of the studies and their key findings are presented within tables. The result is a document that serves as a primer, allowing readers a good understanding of the vocabulary of the field, as well as knowledge of the topics that have been researched to date.