New Hampshire - Criteria: C (architecture/engineering)
| Chapel of the Holy Cross |
| Charlestown Main Street Historic District |
| Charlestown Town Hall |
| Cheever, George, Farm |
| Chesham Village District |
| Cheshire County Courthouse |
| Chester Congregational Church |
| Chester Village Cemetery |
| Chocorua Island Chapel |
| Chocorua Lake Basin Historic District |
| Claremont City Hall |
| Claremont Warehouse No. 34 |
| Clymer House |
| Cocheco Mills |
| Colburn Park Historic District |
| Cold River Bridge |
| Colony House |
| Colony's Block |
| Columbia Covered Bridge |
| Conant Public Library |
| Concord Civic District |
| Concord Gas Light Company Gasholder House |
| Concord Historic District |
| Congregational Church |
| Contoocook Mills Industrial District |
| Contoocook Railroad Depot |
| Conway Public Library |
| Cooke, Noah, House |
| Cook Memorial Library |
| Coombs Covered Bridge |
| Corey Farm |
| Cornish-Windsor Covered Bridge |
| Cote House |
| Cotton Mountain Community Church |
| County Farm Bridge |
| County Farm Bridge |
| Covit House |
| Crawford Depot |
| Crawford House Artist's Studio |
| Crippen, Henry J., House |
| Crockett, John, House |
| Currier, Capt. Jonathan, House |
| Currier Gallery of Art |
| Dalton Covered Bridge |
| Dame School |
| Dana Meeting House |
| Danville Meetinghouse |
| Deerfield Center Historic District |
| Derby Shop-Goodnow Pail Factory-Holman & Merriman Machine Shop-L. A. Carpenter Machine Shop-Streeter Shop |
| Dexter, David, House |
| Dinsmoor-Hale House |
| District A |
| District B |
| District C |
| District D |
| District E |
| District No. 2 Schoolhouse |
| District No. 9 Schoolhouse |
| Dorchester Common Historic District |
| Dorchester Community Church |
| Dow Academy |
| Downing, Lewis, Jr., House |
| Downtown Concord Historic District |
| Drake Farm |
| Drewsville Mansion |
| Dublin Town Hall |
| Dublin Village Historic District |
| Dudley House |
| Dunlap Building |
| Durgin Bridge |
| Durgin, Gershom, House |
| Durham Historic District |
| Durham House |
| Eagle Hotel |
| Eagle Mountain House |
| Early Settlers Meeting House |
| East Andover Village Center Historic District |
| East Derry Historic District |
| Eastern Slope Inn |
| Eaton, Moses, Jr., House |
| Elkins, John, Farmstead |
| Elliot Mansion |
| Elm Farm |
| Endicott Hotel |
| Enfield Center Town House |
| Enfield Shaker Historic District |
| Enfield Village Historic District |
| English Church |
| Evangelical Baptist Church |
| Eveleth Farm |
| Exeter Waterfront Commercial Historic District |
| Fabyan Guard Station |
| Far Horizons |
| Farrington House |
| Farwell, Corban C., Homestead |
| Farwell School |
| Fasnacloich |
| Federal Building |
| First Baptist Church of Cornish |
| First Baptist Church of Gilmanton |
Data from United States Park Service and Wikidata
