Mattress World, Inc., doing business as Mattress World of Michigan was a mattress retailer with stores in Michigan and seven in Indiana in the . Its headquarters were in , near .
In a press release, stated that Mattress World catered "to a value conscious consumer who is interested in national brands at the lowest prices, selling brands such as , , and ." Shandra Martinez of described the chain as being "value-based". wrote that Mattress World was "more promotional" than , the company which acquired the chain in 2011.
In 2002 Mattress World had three stores in the state of Michigan. Mattress World was, according to a article, the apparent high bidder for six Mattress Discounters stores in ; Mattress Discounters was exiting the Michigan market.
In 2009 the company had 22 locations. In May during that year it acquired seven Mattress Gallery stores in ; the Mattress Gallery stores, previously owned by the Indianapolis-based Today's Bedroom One, had closed in April 2009. The company planned to convert them into Mattress World locations. The stores reopened as Mattress World locations in June 2009.