Grendel's Den

Grendel's Den is a bar and restaurant in Harvard Square in Cambridge, Massachusetts, located at 89 Winthrop Street. The establishment is frequented by both students and professors of Harvard University as well as many others from the Cambridge and Boston area. The name was a reference to Grendel, the antagonist in the Old English epic Beowulf.

The restaurant is perhaps most famous for the lawsuit Larkin v. Grendel's Den, Inc., 459 U.S. 116, which reached the Supreme Court of the United States in 1982. The suit challenged the Massachusetts state blue law allowing a school or a religious institution within 500 feet of a liquor license applicant to prevent the issuance.