The Harvard/MIT Cooperative Society (or The Coop, pronounced as a single syllable) is a Cambridge, Massachusetts retail cooperative for the Harvard University and MIT campuses. The general public is encouraged to freely enter and make purchases in all the Coop stores, but membership discounts and certain other benefits are restricted to Coop members. As of 2020, there are three store locations at Harvard, and two at MIT. The main store is located in the heart of Harvard Square, across the street from the Harvard subway station headhouse.