Susan Hayhurst (December 25, 1820 – August 7, 1909) was an American physician, pharmacist, and educator, and the first woman to earn a pharmaceutical degree in the United States.

Taking an interest in chemistry and physiology, she enrolled at the Woman's Medical College of Pennsylvania, and graduated with a degree in medicine in 1857.

Though Dr. Clara Marshall had previously done so,[5] it was rare for the college to admit women, and Hayhurst was the only woman in her class of 150.

She supervised the purchase and manufacture of supplies, assisted missionaries to foreign countries, and acted as mentor to 65 women pharmacists.

[2][4] The Philadelphia College of Pharmacy held a memorial service in her honor on November 15, 1910, and commissioned a painting of her to be hung in its museum.