Loblaw Companies Limited is a Canadian retailer encompassing corporate and franchise supermarkets operating under 22 regional and market-segment banners, as well as pharmacies, banking and apparel. Loblaw operates a private label program that includes grocery and household items, clothing, baby products, pharmaceuticals, cellular phones, general merchandise and financial services. Loblaw is the largest Canadian food retailer, and its brands include President's Choice, No Name and Joe Fresh. It is controlled by George Weston Limited, a holding company controlled by the Weston family; Galen G. Weston is the chair of the Loblaw board of directors, as well as chair of the board of directors and CEO of Canada-based holding company George Weston.

A supermarket is a self-service shop offering a wide variety of food, beverages and household products, organized into sections. This kind of store is larger and has a wider selection than earlier grocery stores, but is smaller and more limited in the range of merchandise than a hypermarket or big-box market. In everyday United States usage, however, "grocery store" is often used to mean "supermarket".