Penny Rafferty Hamilton (born February 18, 1948) is an American retired pilot, aviation educator, writer, and photographer.
She is noted for her two-year study of women in aviation, the Teaching Women to Fly Research Project, which identified barriers to women training as pilots and presented 101 strategies to increase the participation of women in aviation.
She also interests children in aviation, giving talks in schools and libraries as the character "Penny the Pilot".
She and her husband jointly hold a World Aviation Speed Record set in 1991.
In addition to writing for aviation magazines, she has published books on the history of Granby, Colorado, where she has resided since 1989.
She was inducted into the Colorado Aviation Hall of Fame in 2011 and the Colorado Women's Hall of Fame in 2014.