George Turner Orton (January 19, 1837 – November 14, 1901) was a physician and political figure in Ontario, Canada.

He studied medicine at the College of Surgeons in Dublin and the University of St Andrews in Scotland.

An issue then arose concerning the oath of allegiance to the monarch, which the British North America Act, 1867 required all members of Parliament to swear before taking their seat.

Orton had sworn the oath after his original election, but did not re-swear it after the by-election, apparently on the misunderstanding that he did not need to swear it again.

He also served as medical officer for the Canadian Pacific Railway and coroner for British Columbia.