The 1991 NCAA Division I field hockey tournament was the 11th annual single-elimination tournament hosted by the National Collegiate Athletic Association to determine the national champion of women's collegiate field hockey among its Division I members in the United States, the culmination of the 1991 NCAA Division I field hockey season.

In a rematch of the previous two years' finals, Old Dominion won their sixth championship, defeating North Carolina in the final, 2–0.

[1] The championship rounds were held at Villanova Stadium on the campus of Villanova University in Villanova, Pennsylvania.