Various mapping methodologies have been used to explore complex social, economic, and environmental components of the food system. Planning scholars, geographers, public health officials, and community organizations have created maps to better understand disparities in the food environment. This review provides an analysis of the nature of geographic information systems mapping in scholarly research and web-based food mapping since 2008. Our review of thirty-four journal articles and seventy web-mapping projects covers the purpose, study area, topics, methods, and application of food mapping research and initiatives. Scholars and community stakeholders will benefit from this review of methodologies to inform their research and policy initiatives.