John Arthur Curzon Thornton (24 February 1902 – November 1993) was an English cricketer.
Thornton was a right-handed batsman who bowled right-arm fast-medium.
He was born at Stoneygate, Leicestershire.
Educated at Uppingham School, Thornton made his first-class debut for Leicestershire against Kent in the 1921 County Championship.
He made two further first-class appearances for the county in that season's County Championship, against Warwickshire and Derbyshire.
He scored 53 runs in his three matches with a high score of 19 not out, while with the ball, he took a single wicket.He died at Cambridge, Cambridgeshire in November 1993.
His brother Frank also played first-class cricket.