Kentucky - Significance region: State
| Burrier, John, House |
| Bush, Capt. Robert V., House |
| Bush-Dykes, W., House |
| Bush, Jonathan, House |
| Bush, Jonathan, Mill |
| Butler, Gen. William O., House |
| Bybee House |
| Cabin Creek Covered Bridge |
| Caldwell House |
| Caldwell, William, Kitchen |
| Calmes, Henry W., House |
| Cambus-Kenneth Estate |
| Campbell County Courthouse at Newport |
| Camp Crescendo |
| Camp Spring House |
| Cardome |
| Carter Caves Pictograph (15CR60) |
| Cartwright Creek Bridge |
| Casey County Courthouse |
| Cathedral Basilica of the Assumption |
| Cathedral of the Assumption |
| Cave Spring |
| Cedar Grove |
| Central Frankfort Historic District |
| Chalfant, Mordecai, House |
| Chandler, John, House |
| Chaumiere des Prairies |
| Chenoweth Fort-Springhouse |
| Cherokee State Park |
| Cherokee Triangle Area Residential District |
| Chestnut Street Methodist Church |
| Chiles, Tarleton, House |
| Christ Church Cathedral |
| Christ Church Episcopal |
| Church of the Advent, Episcopal |
| Church of the Messiah |
| Citizens National Life Insurance Building |
| Civil War Fort at Boonesboro |
| Clark County Courthouse |
| Clark, Gov. James A., Mansion |
| Clay, Dr. Henry, House |
| Clay Hill |
| Clements House |
| Clinkenbeard, William, House |
| Clover Hill |
| Cloverport Historic District |
| Cocanougher House |
| Colby Tavern |
| College Street Historic District |
| Columbus-Belmont Civil War State Park |
| Colville Covered Bridge |
| Colvin, Henry, House |
| Conley-Greene Rockshelter (15EL4) |
| Conner, George, House |
| Conrad-Seaton House and Archeological Site |
| Constitution Square Historic District |
| Cooper's Run Baptist Church |
| Coppage, Rhodin, Spring House |
| Cornelison Mound |
| Cornelison Pottery |
| Couchman House |
| Country Estates of River Road |
| Court Clerk's Office-County & Circuit |
| Courthouse Square and Mechanics' Row Historic District |
| Covington Downtown Commercial Historic District |
| Coy Site Complex |
| Craig-Johnson Mill Dam and Mill Sites |
| Crescent Hill Reservoir |
| Crisler-Crisler Mounds Site |
| Crist, Henry, House |
| Croley-Evans Site (15KX24) |
| Cross Keys Tavern Kitchen and Quarters |
| Crow-Barbee House |
| Crow Hollow Petroglyphs (15GY65) |
| Crow, William, House |
| Culbertson House |
| Cullom, Frances, Jr., House |
| Cusick, Ed, House |
| Cynthiana Commercial District |
| Daugherty Bear Track Petroglyphs (15JA160) |
| Daughters' College |
| Dependency on Mulberry Creek |
| Dills Site |
| Dismal Rock Shelter Petroglyphs (15ED15) |
| Doe Run Creek Historic District |
| Doe Run Mill |
| Doe Run Trestle |
| Doricham |
| Downtown Richmond Historic District |
| Dry Run Site |
| Duncan House |
| Duncan Tavern |
| Dunklau Site (15WA374; 15WA380) |
| Dunn, Nathaniel, House |
| DuPuy, Joel, House |
| Dutch Reformed Church |
| Eales, James, House |
| East Newport Historic District |
| Ebenezer Presbyterian Church |
| Edelen House |
Data from United States Park Service and Wikidata
