St. Hyacinth's Church may refer to:
Basilica of Saint Hyacinth, Chicago, Illinois, United States St. Hyacinth's Cathedral, Saint-Hyacinthe, Canada St. Hyacinth's Church, Vyborg, Russia St. Hyacinth's Church, Warsaw, Poland St. Hyacinth's Church, Wierzbica Górna, Poland St Protus and St Hyacinth's Church, Blisland, a Grade I listed parish church in Blisland, Cornwall, England
See also St. Hyacinth (disambiguation)