Indiana - Significance region: Local
| Converse Commercial Historic District |
| Converse Depot |
| Converse-Jackson Township Public Library |
| Conwell, Elias, House |
| Cooper-Alley House |
| Coppes, Frank and Katharine, House |
| Corbin, Roy and Iris, Lustron House |
| Cornell, William, Homestead |
| Cornstalk Covered Bridge |
| Cottage Home Historic District |
| Coulter Flats |
| County Line Bridge |
| Courthouse Historic District |
| Courthouse Square Historic District |
| Courthouse Square Historic District |
| Covington Courthouse Square Historic District |
| Covington Residential Historic District |
| Cragun, Strange Nathanial, House |
| Craig, William Houston, House |
| Crawford-Gilpin House |
| Crawfordsville Commercial Historic District |
| Crawfordsville High School |
| Crawford-Whitehead-Ross House |
| Crawford-Winslow House |
| Craycraft, Daniel, House |
| Cromwell Historic District |
| Cross School |
| Crothersville Independent Order of Oddfellows (IOOF) Lodge |
| Crowe-Garritt House |
| Crown Point Courthouse Square Historic District |
| Culver Commercial Historic District |
| Culver Historic District |
| Cumberland Historic District |
| Curtis-Grace House |
| Danville Courthouse Square Historic District |
| Danville Main Street Historic District |
| Dartmouth |
| Daugherty, Elnora, Farm |
| Daugherty, James and Annetta, House and Barn |
| Daugherty-Monroe Archaeolgical Site (12SU13) |
| Davenport-Bradfield House |
| David and Harriet Hopwood House |
| Daviess County Courthouse |
| Davis, William E. and Carolyn, House |
| Dayton Historic District |
| Dearborn County Asylum for the Poor |
| Dearborn County Courthouse |
| Decatur Homesteads |
| Deer Creek Valley Rural Historic District |
| Dekalb County Home and Barn |
| Delaware Court |
| Delaware Flats |
| Dell Plain, Morse, House and Garden |
| Delphi City Hall |
| Delphi Courthouse Square Historic District |
| Delphi Methodist Episcopal Church |
| Delphi Residential Historic District |
| Delta Kappa Epilson Fraternity House |
| Dennis, David Worth, House |
| DePauw Avenue Historic District |
| DePew, Dr. Jeremiah and Ann Jane, House |
| Devonshire |
| Dick Huffman Covered Bridge |
| Dierdorff Farmstead |
| Dietrich-Bowen House |
| Dille-Probst House |
| District School No. 3 |
| Division Street School |
| Dixie Garage |
| DIXIE (sternwheeler) |
| Doddridge Chapel and Cemetery |
| Dodge House |
| Douglass School |
| Downs, Thomas, House |
| Downtown Auburn Historic District |
| Downtown Aurora Historic District |
| Downtown Butler Historic District |
| Downtown Lafayette Historic District |
| Downtown LaPorte Historic District |
| Downtown Lawrenceburg Historic District |
| Downtown Nappanee Historic District |
| Downtown Wabash Historic District |
| Driving Park-Seven States Historic District |
| Dr. Jefferson and Eliza Arnold Helm House |
| Drover Town Historic District |
| Dublin Friends Meeting House |
| Dubois County Courthouse |
| Dugan, Charles, House |
| Dunbar Covered Bridge |
| Dune Acres Clubhouse |
| Durham, George and Sarah, House |
| Dutch Ridge Historic District |
| Eaglefield Place |
| Eagles Home |
| Earlham College Observatory |
| Eastern Enlargement Historic District |
| East Fort Wayne Street Historic District |
| East Hill Cemetery |
| East Laporte Street Footbridge |
| East Main Street-Glen Miller Park Historic District |
Data from United States Park Service and Wikidata
