Sir William Withey Gull, 1st Baronet was an English physician. Of modest family origins, he established a lucrative private practice and served as Governor of Guy's Hospital, Fullerian Professor of Physiology and President of the Clinical Society. In 1871, having successfully treated the Prince of Wales during a life-threatening attack of typhoid fever, he was created a Baronet and appointed to be one of the Physicians-in-Ordinary to Queen Victoria.