Mary Edwards Walker, commonly referred to as Dr. Mary Walker, was an American abolitionist, prohibitionist, prisoner of war, and surgeon. She is the only woman to receive the Medal of Honor.

The Medal of Honor (MOH) is the United States Armed Forces' highest military decoration and is awarded to recognize American soldiers, sailors, marines, airmen, guardians, and coast guardsmen who have distinguished themselves by acts of valor. The medal is normally awarded by the President of the United States and is presented "in the name of the United States Congress." It is often, not strictly correctly, referred to as the Congressional Medal of Honor.