St Mildred's Church or similar variations can refer to numerous churches:
United Kingdom St Mildred, Bread Street, London St Mildred, Poultry, London St Mildred's Church, Lee, London St Mildred's Church, Canterbury St Mildred's Church, Whippingham, Isle of Wight St Mildred's Priory, Minster-in-Thanet, Kent St Mildred's Church, Preston-next-Wingham, Kent St Mildred's Church, Tenterden, Kent St Mildred's, Nurstead, Kent St Mildred's Church, Ipswich (on the site now occupied by the Town Hall)
Other places Chapelle Sainte Mildrède, Millam, Nord department, France Sint Meldredakerk, Izenberge, West Flanders, Belgium St. Mildred Catholic Church, Swansboro, North Carolina, United States