Sam's West, Inc. (doing business as Sam's Club) is a division of Walmart that operates a chain of membership-only warehouse club retail stores. Founded in 1983 as Sam's Wholesale Club, it was named after Walmart founder Sam Walton. As of January 31, 2025, Sam's Club ranks second in sales volume among warehouse clubs with $90.2 billion in sales, ahead of BJ's Wholesale Club but behind its main rival Costco.
As of May 18, 2025, Sam's Club operates 600 membership warehouse clubs in the United States across 44 states and Puerto Rico, with no locations in Alaska, Massachusetts, Oregon, Rhode Island, Washington State, or Vermont. Sam's Club offers car wash services at gas stations in 41 locations.