Schwegmann Brothers Giant Supermarkets, commonly known as Schwegmann or colloquially Schwegmann's, is a defunct grocery store chain that served the New Orleans, Louisiana, metropolitan area until 1997. The chain developed significant innovations in grocery retailing and influenced other big box retailers that emerged in the latter 20th century and early 21st century. The founder and chief executive of the modern version of the chain was John G. Schwegmann, although his uncle and grandfather ran predecessors to the modern chain.