Joseph LaPage (born Joseph Paget; 1838 – March 15, 1878), also known as "The French Monster" and various other aliases, was a Canadian rapist, serial killer and necrophile who murdered four women in Canada and the United States, also attempting to kill his wife's sister and another unnamed woman. He was hanged for the murder of 17-year-old Josie Langmaid, which occurred in Pembroke, New Hampshire.