The top five grocery and supermarket operators in the United States, ranked by annual revenue and market influence, consist of Walmart, The Kroger Co., Costco Wholesale, Albertsons Companies, and Ahold Delhaize USA. These five corporate enterprises collectively account for a major share of total American food retail commerce. They operate diverse business models ranging from massive discount supercenters and membership-only warehouse clubs to traditional regional supermarket banners and online grocery delivery networks.