The 1991 Nabisco Dinah Shore was a women's professional golf tournament, held March 28–31 at Mission Hills Country Club in Rancho Mirage, California. This was the 20th edition of the Nabisco Dinah Shore, and the ninth as a major championship. At age 35, Amy Alcott broke her own scoring record to win her third Dinah Shore by eight strokes over runner-up Dottie Pepper, who won the following year. Alcott entered the final round with a seven-stroke lead; it was her fifth major title and 29th and final win on the LPGA Tour.