Timothy Martin Thornton (born 14 April 1957) is a British Anglican bishop.
Since 6 September 2017, he has been Bishop at Lambeth, Bishop to the Forces, and Bishop for the Falkland Islands.
He was previously the area Bishop of Sherborne from 2001 to 2008, the diocesan Bishop of Truro (2009–2017), and a Member of the House of Lords (2013–2017).