William Josephus Robinson (8 December 1867 - 6 January 1936) was an American physician, sexologist and birth control advocate. He was Chief of the department of Genito-Urinary Diseases at Bronx Hospital Dispensary, and editor of the American Journal of Urology and Sexology. Robinson was active in the birth control movement in the United States. He was "the first American physician to demand that contraceptive knowledge be taught to medical students and probably the most influential and popular of the American physicians writing on birth control in the first three decades of the twentieth century". As well as his own medical writings, Robinson edited the works of the pioneering pediatrician Abraham Jacobi. He was also a freethinking critic of Christianity.