John Samuel Synge (12 July 1906 — 26 August 1982) was an Irish international rugby union player.
Synge, born in Dublin, was educated at St Columba's College and Clare College, Cambridge. His parents were Samuel Synge and Mary Harmar, both physicians and medical missionaries to China.
A Cambridge rugby blue, Synge was a robust forward who was at his best on the loose and gained his only Ireland cap as a wing-forward, deputing for Charles Payne against Scotland at Lansdowne Road in 1929.



