John Dando Sedding was an English church architect, working on new buildings and repair work, with an interest in a "crafted Gothic" style. He was an influential figure in the Arts and Crafts movement, many of whose leading designers, including Ernest Gimson, Ernest Barnsley and Herbert Ibberson, studied in his offices.

St Elwyn’s Church is a Grade II* listed parish church in the Church of England Diocese of Truro in Hayle, Cornwall, England, UK.