Massachusetts - Significance region: Local
| Carr, Martin W., School |
| Carroll-Hartshorn House |
| Carter Mansion |
| Cartoof & Sherman Apartments |
| Caryl, Benjamin, House |
| Cary, Otis, House |
| Case's Corner Historic District |
| Casey's Diner |
| Castle, The |
| Cataumet Schoolhouse |
| Cathedral of St. George Historic District |
| Cedar Swamp Archeological District |
| Center Cemetery |
| Center Cemetery |
| Center Depot |
| Center Methodist Church |
| Center School |
| Center Village District |
| Centerville Historic District |
| Central Churchill Historic District |
| Central Fire Station |
| Central Fire Station |
| Central Fire Station |
| Central Fire Station |
| Central Gloucester Historic District |
| Central Library |
| Central Mills Historic District |
| Central New Bedford Historic District |
| Central Square Historic District |
| Central Square Historic District |
| Central Square Historic District |
| Central Square Historic District |
| Central Square Historic District |
| Central Street District |
| Central Street Historic District |
| Centre and Montello Streets Historic District |
| Centre Village Historic District |
| Chamberlain-Bordeau House |
| Chamberlain, Samuel, House |
| Chandler, Gen. Samuel, House |
| Chapel of St. Anne |
| Chapin Block |
| Chapin National Bank Building |
| Chapin School |
| Chaplin-Clarke House |
| Charlemont Village Historic District |
| Charles River Reservation (Speedway)-Upper Basin Headquarters |
| Charles Street African Methodist Episcopal Church |
| Charles Street Workers' Housing Historic District |
| Charlestown Heights |
| Charlotte Street-Esmond Street Historic District |
| Charlton Center Historic District |
| Charter Street Historic District |
| Chase Library |
| Chatham Railroad Depot |
| Chatham Windmill |
| Chelmsford Center Historic District |
| Chelsea Garden Cemetery |
| Chelsea Square Historic District |
| Cheney, Alpha M., House |
| Cheney, J. M., Rental House |
| Cheshire Town Hall Complex |
| Chester Center Historic District |
| Chester Factory Village Historic District |
| Chesterfield Center Historic District |
| Child, Francis J., House |
| Childs, Mayor Edwin O., House |
| Childs, Webster, House |
| Choate, Rufus, House |
| Christ Church |
| Christ Church |
| Christ Church Burial Ground |
| Christ Episcopal Church |
| Chubbuck, Thomas, Jr., House |
| Church Green |
| Church Green Buildings Historic District |
| Church-Lafayette Streets Historic District |
| Church of Christ |
| Church of Christ, Swansea |
| Church of the New Jerusalem |
| Church on the Hill |
| Church Street Historic District |
| Church Street Historic District |
| Church Street Historic District |
| Church, William L., House |
| Citizens Hall |
| City Hall |
| City Stable and Garage |
| Claflin School |
| Clapp, George, House |
| Clapp Houses |
| Clapp, Lucius, Memorial |
| Clark-Eames House |
| Clarke-Glover Farmhouse |
| Clarke, Pitt, House |
| Clarke School for the Deaf Historic District |
| Clark Houses |
| Clark-Northrup House |
| Cleale, Joseph, House |
| Cliff Cottage |
Data from United States Park Service and Wikidata
