St Deiniol's Church, Hawarden, is in the village of Hawarden, Flintshire, Wales. It is the parish church of the rectorial benefice of Hawarden in the deanery of Hawarden, the archdeaconry of Wrexham, and the diocese of St Asaph. The church has associations with W. E. Gladstone and his family, and is designated by Cadw as a Grade II* listed building.

Sir Giles Gilbert Scott was a British architect known for his work on the New Bodleian Library, Cambridge University Library, Lady Margaret Hall, Oxford, Battersea Power Station, Liverpool Cathedral, and designing the iconic red telephone box.