Sharon E. Barker (born 1949) is a Canadian-American women's rights activist, women's health advocate, and feminist. She is the founding director of the Women's Resource Center at the University of Maine and one of the founders and first president of the Mabel Sine Wadsworth Women's Health Center in Bangor. For over 30 years she has advocated for women and girls in the areas of health care, gender equality, sexual assault, and reproductive rights. She was inducted into the Maine Women's Hall of Fame in 2009.