Self storage is an industry in which storage space is rented to tenants, usually on a monthly basis. A self storage business provides rooms, lockers, containers, and/or outdoor space in which tenants can store and access their goods. Self storage tenants include businesses and individuals.

The self storage industry is primarily a United States-based industry: of the 58,000 storage facilities worldwide in 2009, 46,000 were located in the United States.