The introduction to the special issue discusses the important aspects of the studies of Halal markets in non-Muslim countries and outlines the contributions of the special issue. It also provides a general theoretical outline to bring the articles of the issue together which also offers a starting point for further discussions about sociological and anthropological studies of Halal economies. The major focus within our discussion of halal practices and definitions of halal is on the moral and rational reasoning behind halal marketing and consumption. These questions open more space for further interpretation of halal in secular contexts.