QIP Holder, LLC, doing business as Quiznos, is an American franchised fast-food restaurant brand based in Denver, Colorado, that specializes in offering toasted submarine sandwiches. It was founded in 1981 by Jimmy Lambatos and sold to Rick and Richard Schaden ten years later, before growing to nearly 5,000 restaurants afterwards. Quiznos was the second-largest submarine sandwich shop chain in North America, behind Subway. A 2016 survey indicated that Quiznos was the ninth-largest submarine sandwich shop chain based on sales. In May 2018, money.com reported that Quiznos had 1,500 locations across the U.S.