Giant Tiger Stores Limited is a Canadian discount store chain which operates over 250 stores across Canada. The company's stores operate under the Giant Tiger banner in Alberta, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island and Saskatchewan; under the GTExpress and Scott's Discount banners in Ontario only, and under the Tigre Géant banner in Quebec.
The chain employs over 8,000 people. The headquarters is located on Walkley Road in Ottawa. In 2018, the company opened a 600,000 square-foot distribution centre in Johnstown, halfway between Montreal and Toronto, at the intersection of Ontario's Highway 401 and Highway 416.