Arthur Edward Joseph Tonkin (19 October 1922 – c. 1991) was an Australia national representative rugby union footballer who featured in the 1947–48 Wallaby tour of the British Isles.
Tonkin's father was one of the pioneers of the New South Wales Country Rugby League but made no attempt to influence his three children on which sports they should play.
Tonkin appeared on the wing in all five Tests of the tour using his blinding acceleration to get around his opposing wingers to score tries against Scotland and Ireland.
Injury affected his representative prospects after the conclusion of the tour but he made a further Test appearance against the British Lions in Sydney in 1950.
Tonkin became a lecturer in physical education after his football career ended and worked at Armidale Teachers' College where he also coached rugby.