Weis Markets, Inc. engages in the retail sale of food through a chain of supermarkets in Pennsylvania and surrounding states.

The company's retail food stores sell groceries, dairy products, frozen foods, meats, seafood, fresh produce, floral, pharmacy services, deli products, prepared foods, bakery products, beer and wine, and fuel; and general merchandise items, such as health and beauty care, and household products.

It operates stores in Delaware, Maryland, New Jersey, New York, Pennsylvania, Virginia, and West Virginia primarily under the Weis Markets name, as well as Weis, Weis 2 Go, Weis Great Meals Start Here, Weis Gas-n-Go, and Weis Nutri-Facts.

The company was founded in 1912 and is based in Sunbury, Pennsylvania.