Maine - Area of significance: Architecture
| Elms |
| Elms, The |
| Elm Street Congregational Church and Parish House |
| Emery Homestead |
| Emery House |
| Emery, James, House |
| Emery School |
| Engine House |
| Everett Chambers |
| Evergreen Cemetery |
| Excelsior Grange #5 |
| Farm House, The |
| Farmington Historic District |
| Farnsworth Homestead |
| Farnsworth House |
| Farrar, Samuel, House |
| Farwell Brothers Store |
| Federal Street Historic District |
| Fiddler's Reach Fog Signal |
| Fifth Maine Regiment Community Center |
| 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 Church of Belfast |
| First Congregational Church and Parsonage |
| 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 Church |
| First Parish Congregational Church |
| First Parish Meetinghouse |
| 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 |
| Fort Fairfield Public Library |
| Fort Halifax |
| Fort Kent Railroad Station |
| Fort Knox State Park |
| Fort McKinley Historic District |
| Fort McKinley Torpedo Storehouse |
| Fort Point Light Station |
| Fort Popham Memorial |
| Foss, Horatio G., House |
| Foss, Levi, House |
| Foster Family Home |
| Foster Farm Barn |
| Foster-Redington House |
| Founders Hall |
| Fowler, Jeremiah, House |
| Franklin County Courthouse |
| Franklin Towers |
| Free Baptist Church |
| Free Baptist Church of Great Pond, The |
| Freeman Barn |
| Freeport Main Street Historic District |
| Free Will Baptist Church and Cemetery |
| Free Will Baptist Church (Former) |
| Free Will Baptist Meetinghouse |
| Frenchville Railroad Station and Water Tank |
| Friends Meetinghouse |
| Frisbee, Frank C., Elementary School |
| Frost Garrison and House |
| Fryeburg Registry of Deeds |
| Frye, Sen. William P., House |
| Gallison Memorial Library |
| Gannett, Guy P., House |
| Garcelon, A. A., House |
| Gardiner Historic District |
| Gardiner Railroad Station |
| Garland Grange Hall |
| Gates House |
| Gay-Munroe House |
| Genthner, Ernest and Louise, House |
| Gerald, Amos, House |
| German Church and Cemetery |
| Gilead Railroad Station |
| Gilmore House |
| Glidden-Austin Block |
| Goat Island Light Station |
| Godfrey-Kellogg House |
| Goodale-Bourne Farm |
| Goodale-Stevens Farm |
| Goodall, Louis B., Memorial Library |
| Goodall, Thomas, House |
| Goodridge Corner School |
Data from United States Park Service and Wikidata
