George Coppinger Ashlin was an Irish architect, particularly noted for his work on churches and cathedrals, and who became President of the Royal Institute of the Architects of Ireland.

The Church of St. Augustine and St. John, commonly known as John's Lane Church, is a large Catholic church located on Thomas Street, Dublin, Ireland. It was opened in 1874 on the site of the medieval St. John's Hospital, founded c. 1180. It is served by the Augustinian Order of friars.