DeMoulas Super Markets, Inc., under the trade name Market Basket, is a chain of 88 supermarkets in New Hampshire, Massachusetts, Maine, and Rhode Island in the United States, with headquarters in Tewksbury, Massachusetts.

On June 23, 2014, the Board of Directors of DeMoulas Super Markets, Inc., the company that runs the Market Basket chain of supermarkets, fired President and CEO Arthur T. Demoulas. Demoulas's dismissal resulted in protests from the company's employees and customers. The protests ended on August 27, 2014, when the company's shareholders, including Arthur S. Demoulas, agreed to sell their shares to Arthur T. Demoulas.