Recreational Equipment, Inc., doing business as REI, is an American retail and outdoor recreation services corporation. It is organized as a consumers' co-operative.

REI is a specialty outdoor retailer, headquartered near Seattle. The nation’s largest consumer co-op, REI is a growing community of 23 million members who expect and love the best quality gear, inspiring expert classes and trips, and outstanding customer service. REI has 181 locations in 42 states and the District of Columbia.

REI is a consumer co-op: a buyers’ club meant to give bulk discounts and better deals to customers. Technically, the consumers own the company, buying in with a $20 lifetime membership that includes benefits like an annual dividend on future purchases, exclusive sales, and the ability to vote for their board of directors.