Thomas Thorne Hetherington was a merchant, farmer and political figure in New Brunswick, Canada.
He represented Queen's County in the Legislative Assembly of New Brunswick from 1882 to 1892 as a Liberal member.
He was born in Johnston, Queen's County, New Brunswick, the son of Richard Hetherington, who came from England.
In 1860, he married Violet D.
Thorne.
Hetherington was a justice of the peace and a commissioner in the Parish Court.
He was reelected in Queen's in 1892 but resigned his seat to allow Andrew George Blair to be elected there in a by-election.His son Judson also served as a member of the provincial assembly, also serving as speaker.