This article traces the hidden race-religion constellation in Europe. The term “race-religion constellation” refers to the connection or co-constitution of the categories of race and “religion.” Specifically, the term “race-religion constellation” is used to refer to the practice of classifying people into races according to categories we now associate with the term “religion.” This calls for a consideration of European history and forms of racism in Europe, such as anti-Semitism and Islamophobia. This article aims to provide an alternative non-secularized or biological account of the origins of the socially constructed category of race in Europe. The alternative story begins in the sixteenth century, when the category of “religion” as a means for classifying peoples was both constructed and politicized. In tracing this alternative story, this article seeks to outline a framework for a critical philosophy of race focused on a European religion line that intersects with Du Bois's color line.