The Delaware–William & Mary football rivalry [1] between the Delaware Fightin' Blue Hens and the William & Mary Tribe is a matchup between two public universities, the University of Delaware (UD) and the College of William & Mary (W&M), that are also members of both the Colonial Athletic Association and its legally separate football arm of CAA Football.

On November 27, 2023, it was announced that the Delaware Fightin' Blue Hens football program had accepted an invitation to move up to the FBS Subdivision and would join Conference USA prior to the 2025 football season.

During CAA Football's divisional eras (2007–2009, plus the COVID-disrupted 2020–21 season), both teams played in the league's South Division.

During this period, the two teams have combined for one National Championship (Delaware in 2003), two shared Conference Championships (2004 and 2010) and seven standalone conference titles (Delaware in 1995, 2000, 2003, and 2010 and William & Mary in 1996 and 2001).

William & Mary has hosted its contests at Zable Stadium in Williamsburg, Virginia; as of 2019, no games have been played on a neutral field.