St. Mary of the Immaculate Conception Church may refer to:
St Mary Immaculate Church, Falmouth, Cornwall, United Kingdom St. Mary of the Immaculate Conception Church (Wilmington, Delaware), United States St. Mary of the Immaculate Conception Church (Morges, Ohio), United States St. Mary of the Immaculate Conception Roman Catholic Church (Fredericksburg, Virginia), United States
See also St. Mary's Church (disambiguation) Church of the Immaculate Conception (disambiguation)