The Demoulas family is a Greek-American family that controls DeMoulas Super Markets, Inc., the company that operates the Market Basket chain of supermarkets. Beginning in 1990, two sides of the Demoulas family fought for control of DeMoulas Super Markets. The dispute ended in 2014, when the family of George Demoulas sold their shares to Frances Demoulas, Glorianne Demoulas, Arthur T. Demoulas and Caren Demoulas after protests by employees and customers.

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.