Zachary Andrew Turner (18 July 2002 – 18 August 2003) was a boy from St. John's, Newfoundland and Labrador who was killed by his mother, Shirley Jane Turner, in a murder-suicide on 18 August 2003. Turner drugged the infant and jumped into the Atlantic Ocean. At the time, Turner had been released on bail and awarded custody of the infant even though she was in the process of being extradited to the United States to stand trial for the murder of Zachary's father, Andrew David Bagby.