1991 Duke Blue Devils football team

The 1991 Duke Blue Devils football team represented Duke University as a member of the Atlantic Coast Conference (ACC) during the 1991 NCAA Division I-A football season. Led by second-year head coach Barry Wilson, the Blue Devils compiled an overall record of 4–6–1 with a mark of 1–6 in conference play, and finished tied for seventh in the ACC. Duke played home games at Wallace Wade Stadium in Durham, North Carolina.