Maine - Significance region: Local
| Duck Cove School |
| Dudley Block |
| Dudley's Corner School House |
| Duncan, Beecher H., Farm |
| Dunlap, John, House |
| Dunn & Elliot Sail Loft |
| Dunning, Deacon Andrew, House |
| Dunstan Methodist Episcopal Church |
| Dutton-Small House |
| Dyer-Hutchinson Farm |
| Dyer, Isaac E., Estate |
| Dyer, Nathaniel, House |
| Dyke Mountain Annex |
| East Blue Hill Library |
| East Blue Hill Post Office |
| Eastbrook Baptist Church and Eastbrook Town House |
| East Eddington Public Hall |
| Eastern Cemetery |
| Eastern Promenade |
| East Machias Historic District |
| East Main Street Historic District |
| Eastport Historic District |
| East Raymond Union Chapel |
| Eaton School |
| Edgecliff |
| Elden's Store |
| Elder Grey Meetinghouse |
| Ellis, Dr. J. W., House |
| Ellsworth City Hall |
| Ellsworth Congregational Church |
| Elm Hill Farm |
| Elms |
| Elms, The |
| Elm Street Congregational Church and Parish House |
| Embden Town House |
| Emery Homestead |
| Emery, James, House |
| Emery School |
| Engine House |
| Enterprise Grange, No. 173 |
| Everett Chambers |
| Excelsior Grange #5 |
| Falmouth High School |
| Falmouth House |
| Far From the Wolf |
| Farm House, The |
| Farmington Historic District |
| Farnsworth Homestead |
| Farnsworth House |
| Farrar, Samuel, House |
| Farwell Brothers Store |
| Farwell Mill |
| Finnish Congregational Church and Parsonage |
| First Baptist Church |
| First Baptist Church |
| First Baptist Church |
| First Baptist Church |
| First Baptist Church, Former |
| First Baptist Church of Bowdoin and Coombs Cemetery |
| First Callahan Building |
| First Congregational Church, Former |
| First Congregational Church of Buxton |
| First Congregational Church, United Church of Christ |
| First McGillicuddy Block |
| First National Bank |
| First National Bank of Houlton |
| First Parish Church |
| First Parish Congregational Church |
| First Parish Meetinghouse |
| First Universalist Church |
| First Universalist Church of Sangerville |
| First Universalist Society of West Sumner |
| Fisherman's Island |
| Fitch's General Store and House |
| Fives Court |
| Fletcher's Neck Lifesaving Station |
| Fogg, William, Library |
| (Former) Maine Central Railroad Depot |
| Former Town Office and Jail |
| Fort Fairfield Public Library |
| Fort Gorges |
| Fort McKinley Torpedo Storehouse |
| Foss, Horatio G., House |
| Foss, Levi, House |
| Foster Family Home |
| Foster Farm Barn |
| Founders Hall |
| Fowler, Jeremiah, House |
| Frankfort Dam |
| Franklin County Courthouse |
| Franklin Grange #124 |
| Franklin Towers |
| Free Baptist Church |
| Free Baptist Church of Great Pond, The |
| Freeman Barn |
| Freeman Farm Historic District |
| Freeport Main Street Historic District |
| Free Will Baptist Church and Cemetery |
| Free Will Baptist Church (Former) |
| Free Will Baptist Meetinghouse |
Data from United States Park Service and Wikidata
