John Athelstan Laurie Riley (10 August 1858 – 17 November 1945) was an English hymn writer and hymn translator. Riley was born in Paddington, London, and attended Pembroke College, Oxford, where obtained his BA in 1881 and MA in 1883. Active in the Anglo-Catholic wing of the Church of England and a member of the Alcuin Club, he energised the development of The English Hymnal (1906) and was chairman of its editorial board. His best-known hymn is "Ye Watchers and Ye Holy Ones". He also created an English adaption of the eucharistic hymn "O Esca Viatorum".