St Hilary's Church may refer to:
Australia St Hilary's Anglican Church, Melbourne, Victoria
United Kingdom St Hilary's Chapel (also known as St Hilary's Church), Denbigh, Denbighshire, Wales St Hilary's Church, St Hilary (Cornwall), England St Hilary's Church, St Hilary (Vale of Glamorgan), Wales St Hilary's Church, Wallasey, Merseyside, England
United States St. Hilary Roman Catholic Church, Washington, Pennsylvania Old Saint Hilary's Church, Marin County, California