New York - Role: Building
| Cleveland, L.E., House |
| Cliffside |
| Clifton |
| Clifton Park Center Baptist Church and Cemetery |
| Clifton Park Hotel |
| Clifton Springs Sanitarium |
| Clinton Corners Friends Church |
| Clinton County Courthouse Complex |
| Clinton Hall |
| Clinton House |
| Clinton House |
| Clinton, Morris, House |
| Clinton-Rosekrans Law Building |
| Clyde Downtown Historic District |
| Clymer District School No. 5 |
| Cobblestone Farmhouse at 1027 Stone Church Rd. |
| Cobblestone Farmhouse at 1111 Stone Church Roach |
| Cobblestone Farmhouse at 1229 Birdsey Road |
| Cobblestone House |
| Cobblestone House |
| Cobblestone Inn |
| Cobblestone Manor |
| Cobble Villa |
| Cocaigne, Nicholas, House |
| Cochecton Center Methodist Episcopal Church |
| Cochecton Presbyterian Church |
| Cochecton Railroad Station |
| Cock-Cornelius House |
| Cocks, Isaac, House |
| Coeymans, Ariaanje, House |
| Coeymans-Bronck Stone House |
| Coeymans School |
| Cohen, H. C., Company Building-Andrews Building |
| Colbath Cottage |
| Cold Brook Feed Mill |
| Colden Mansion Ruins |
| Cold Spring Cemetery Gatehouse |
| Cold Spring Harbor Beach Club |
| Cold Spring Harbor Fire District Hook and Ladder Company Building |
| Cold Spring Harbor Library |
| Cole Cobblestone Farmhouse |
| Coles, Robert T., House and Studio |
| Cole, Thomas, House |
| Colgate, Robert, House |
| College of the City of New York |
| Collingwood Opera House and Office Building |
| Collins House |
| Collins, Jonathan C., House and Cemetery |
| Collins, Nathaniel Bishop, House |
| Collyer, Capt. Moses W., House |
| Colonial Flats and Annex |
| Colony Arcade Building |
| Colored Musicians Club |
| Coltrane House |
| Columbia Turnpike East Tollhouse |
| Columbia Turnpike-West Tollhouse |
| Columbus Community Church |
| Colvin, Addison B., House |
| Colyer House, The |
| Commack Methodist Church and Cemetery |
| Commercial Building at 32 West Bridge Street |
| Commercial Row at Broadway and Michigan Avenue |
| Common School 32 |
| Common School No. 10 |
| Community Building |
| Community of True Inspiration Residence |
| Community Place |
| Community Theatre |
| Comstock Hall |
| Comstock, Nathan, Jr., House |
| Comstock, Zephnia, Farmhouse |
| Conant, Austin R., House |
| Concklin, Abner, House |
| Conesus Amusement Hall |
| Coney Island Fire Station Pumping Station |
| Conference House |
| Congdon, Hiram, House |
| Congregation Ahavas Achim Anshi Austria |
| Congregational Church |
| Congregational Church of Patchogue |
| Congregational Church of the Evangel |
| Congregation Beth Abraham |
| Congregation Bnai Israel Synagogue |
| Congregation B'nai Jeshurun Synagogue and Community House |
| Congregation Chevra Linath Hazedeck |
| Congregation Ohab Zedek |
| Congregation Shaare Zedek of Harlem |
| Congregation Tifereth Israel |
| Congregation Tifereth Israel |
| Congregation Tifereth Israel Synagogue |
| Congregation Tifereth Yehuda Veyisroel |
| Conkey House |
| Conklin, David, House |
| Conklin Farm |
| Conkling, Roscoe, House |
| Conklin Mountain House |
| Conklin, Nathaniel, House |
| Conklin Town Hall |
| Connecticut Street Armory |
| Connors, William, Paint Manufacturing Company Building |
Data from United States Park Service and Wikidata
