New York - Area of significance: Architecture
| Camp Veery |
| Camp Wapanachki |
| Camp Wild Air |
| Camroden Presbyterian Church |
| Canajoharie Historic District |
| Canal Town Museum |
| Canandaigua Historic District |
| Canandaigua Veterans Hospital Historic District |
| Canaseraga Four Corners Historic District |
| Canastota Methodist Church |
| Canastota Public Library |
| Candler Building |
| Cannon-Brownell-Herrington Farmstead |
| Cannon Building |
| Canterbury Presbyterian Church |
| Capitol Theater |
| Caramoor |
| Cargill House |
| Carley's Mills Schoolhouse |
| Carll, Ezra, Homestead |
| Carll House |
| Carll House |
| Carll, Marion, Farm |
| Carman, Cornelius, House |
| Carnegie Library |
| Carner, John Jr., House |
| Caroline Church and Cemetery |
| Carpenter, John B., House |
| Carrington House |
| Carr, John, House |
| Carroll Gardens Historic District |
| Carter, John, Farmstead |
| Carter Street Schoolhouse No. 21 |
| Cartin-Snyder-Overacker Farmstead |
| Carvey-Gatfield House |
| Cary Building |
| Casa Amadeo, antigua Casa Hernandez |
| Casa Italina |
| Cascadilla School Boathouse |
| Case, James H., III and Laura Rockefeller Case, House |
| Casemate Fort, Whiting Quadrangle |
| Case Memorial-Seymour Library |
| Cash-Draper House |
| Casino-Congress Park-Circular Street Historic District |
| Casita Rincón Criollo |
| Caspar Getman Farmstead |
| Castle Rock |
| Castle Williams |
| Cathedral of All Saints |
| Cathedral of the Immaculate Conception |
| Cattaraugus Village Commercial Historic District |
| Catt, Carrie Chapman, House |
| Cauldwell, William, House |
| Cayuga County Courthouse and Clerk's Office |
| Cayuga Preventorium |
| Cazenovia Village Historic District |
| C. Burton Hotel |
| Cedarcliff Gatehouse |
| Cedar Cove |
| Cedar Grove Cemetery |
| Cedar Island Lighthouse |
| Cedar Lake Methodist Episcopal Church |
| Cedarmere-Clayton Estates |
| Center Square-Hudson-Park Historic District |
| Center Theatre |
| Centerville Town Hall |
| Central Avenue Historic District |
| Central Avenue Historic District |
| Central Fire Station |
| Central Garage |
| Central Hall |
| Central Harlem North Historic District |
| Central IND Substation |
| Central Lansingburgh Historic District |
| Central Naples Historic District |
| Central New York Telephone and Telegraph Building |
| Central Park West Historic District |
| Central Powerhouse |
| Central Ridgewood Historic District |
| Central Savings Bank |
| Central School |
| Central Synagogue |
| Central Technical High School |
| Central Troy Historic District |
| Central Trust Bank Building |
| Centre Presbyterian Church |
| Century Association Building |
| Century Building |
| Ceres School |
| Chadwick Farmhouse |
| Chalmers Knitting Mills |
| Chamberlain, Benjamin, House |
| Chamberlain, Daniel, House |
| Chamber of Commerce |
| Chamber of Commerce Building |
| Chambers Street Subway Station (Dual System BMT) |
| Chambers Street Subway Station (Dual System IRT) |
| CHAMPLAIN II Shipwreck |
| Champlin, H. D., & Son Horseshoeing and Wagonmaking |
| Chandler, Peter, House |
Data from United States Park Service and Wikidata
