St Cyprian's Church is a parish church of the Church of England in the Marylebone district of London. The church was consecrated in 1903, but the parish was founded in 1866. It is dedicated to Cyprian, a third-century martyr and bishop of Carthage and is near the Clarence Gate Gardens entrance to Regent's Park, off Baker Street. The present church was designed by Ninian Comper and is a Grade II* listed building.