Ralph Carrette Day (November 24, 1898 – May 21, 1976) was mayor of Toronto, Ontario from 1938 to 1940. He was also an accomplished funeral director, owning his own funeral home. He also served as chairman of the Toronto Transit Commission in the 1960s and 1970s. He was also a member of the Orange Order in Canada. In 1916, at the age of 17, Day joined the Canadian army to fight in World War I. He would fight and survive action at the Battle of Vimy Ridge.