The 1991 James Madison Dukes football team represented James Madison University as an independent during the 1991 NCAA Division I-AA football season.
Led by first-year head coach Rip Scherer, the Duke played their home games at Bridgeforth Stadium in Harrisonburg, Virginia.
James Madison finished the season with an overall record of 9–4.
They qualified for the NCAA Division I-AA Football Championship playoffs, beating Delaware in the first round before falling to Samford in the quarterfinals.
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