New York - Criteria: A (event)
| Cannon Building |
| Carll House |
| Carll, Marion, Farm |
| Carnegie Hall |
| Carnegie Library |
| Carpenter's Flats Bridge |
| Carrington House |
| Carroll Gardens Historic District |
| Carter, John, Farmstead |
| Carter Street Schoolhouse No. 21 |
| Cartin-Snyder-Overacker Farmstead |
| Casa Amadeo, antigua Casa Hernandez |
| Cascadilla School Boathouse |
| Casemate Fort, Whiting Quadrangle |
| Casino-Congress Park-Circular Street Historic District |
| Caspar Getman Farmstead |
| Castle Clinton National Monument |
| Castle Williams |
| CATAWISSA (tugboat) |
| Cattaraugus Village Commercial Historic District |
| Catt, Carrie Chapman, House |
| Cayuga County Courthouse and Clerk's Office |
| Cazenovia Village Historic District |
| C. Burton Hotel |
| Cedar Cove |
| Cedar Grove Cemetery |
| Cedar Island Lighthouse |
| Center Theatre |
| Centerville Town Hall |
| Central Avenue Historic District |
| Central Hall |
| Central IND Substation |
| Central Lansingburgh Historic District |
| Central New York Telephone and Telegraph Building |
| Central Powerhouse |
| Central School |
| Central Synagogue |
| Central Technical High School |
| Centreport Aqueduct |
| Century Building |
| Chalmers Knitting Mills |
| Chamber of Commerce Building |
| Chambers Street Subway Station (Dual System BMT) |
| Chambers Street Subway Station (Dual System IRT) |
| Champlain Canal |
| CHAMPLAIN II Shipwreck |
| Chapel and Cultural Center |
| Chapel of Our Lady Help of Christians |
| Chapel of the Intercession Complex and Trinity Cemetery |
| Chapin Memorial Church |
| Chappaqua Railroad Depot and Depot Plaza |
| Chappell Farmhouse |
| Chase Cobblestone Farmhouse |
| Chase Mills Inn |
| Chaumont House |
| Chautauqua Institution Historic District |
| Checkerboard Inn |
| Chelsea Historic District |
| Chemung Canal Bank Building |
| Chemung County Courthouse Complex |
| Chemung Railway Depot-Horseheads |
| Chenango Canal Prism and Lock 107 |
| Chenango Canal Summit Level |
| Chenango County Courthouse District |
| Cherry Grove Community House and Theatre |
| Chestertown Historic District |
| Chetolah |
| Chevalier, Xavier, House |
| Chevra Linas Hazedek Synagogue of Harlem and the Bronx |
| Chevro Ahavath Zion Synagogue |
| Chichester's Inn |
| Childwold Memorial Presbyterian Church |
| Chili-West Historic District |
| Chinatown and Little Italy Historic District |
| Chittenango Landing Dry Dock Complex |
| Chittenango Pottery |
| Christ Building |
| Christ Church |
| Christ Church |
| Christ Church and Manlius Village Cemeteries |
| Christ Episcopal Church |
| Christ Episcopal Church |
| Christ Episcopal Church |
| Christ Evangelical English Lutheran Church |
| Christian Church |
| Christman Bird and Wildlife Sanctuary |
| Christodora House |
| Church-in-the-Gardens, The |
| Church Missions House |
| Church of Saint Lawrence |
| Church of Saints Peter and Paul Complex |
| Church of St. Andrew (Episcopal) |
| Church of St. Dismas, the Good Thief |
| Church of St. Ignatius Loyola Complex |
| Church of St. Mary the Virgin Complex |
| Church of the Good Shepherd |
| Church of the Holy Apostles |
| Church of the Holy Communion and Buildings |
| Church of the Holy Cross |
| Church of the Holy Transfiguration of Christ-on-the-Mount |
Data from United States Park Service and Wikidata
