Maine - Criteria: C (architecture/engineering)
| U.S. Customhouse and Post Office |
| U.S. Customhouse (Old Customhouse) and Post Office |
| U.S. Inspection Station-Calais (Ferry Point), Maine |
| U.S. Inspection Station-Orient, Maine |
| U.S. Post Office |
| US Post Office-Bar Harbor Main |
| US Post Office-Camden Main |
| US Post Office-Lewiston Main |
| US Post Office-Old Town Main |
| US Post Office-Orono Main |
| US Post Office-Portland Main |
| US Post Office-Presque Isle Main |
| US Post Office-Sanford Main |
| Valley Lodge |
| Vaughan Homestead |
| Veazie, Jones P., House |
| Vickery Building |
| VICTORY CHIMES (Schooner) |
| Vienna Town House |
| Village School |
| Vinalhaven Public Library |
| Von Mach Site (ME l5l/02) |
| Wadsworth Hall |
| Waldo Theatre |
| Wales and Hamblen Store |
| Walker Memorial Hall |
| Walker Memorial Library |
| Wallace, Everett, House |
| Wallingford Hall |
| Walpole Meetinghouse |
| Wardwell-Trickey Double House |
| Warren Block |
| Warren, David, House |
| Washburn, George, House |
| Washburn, Gov. Israel, House |
| Washington County Courthouse |
| Washington County Jail |
| Waterboro Grange, No. 432 |
| Water Street |
| Waterville High School |
| Waterville Main Street Historic District |
| Waterville Post Office |
| Watkins House and Cabins |
| Watson, John, House |
| Way Way General Store |
| Webb, John and Maria, House |
| Webster Grammar School |
| Webster, Moses, House |
| Wedgewood, Dr. Milton, House |
| Welch, Andrew, Homestead |
| Wells Baptist Church Parsonage |
| Wells Homestead |
| WENDAMEEN (Yacht) |
| Westbrook College Historic District |
| Westbrook High School |
| West Brooksville Congregational Church |
| West Durham Methodist Church |
| Western Promenade |
| Western Promenade Historic District |
| West Gouldsboro Union Church |
| West Gouldsboro Village Library |
| West Lebanon Historic District |
| West Market Square Historic District |
| Weston, Daniel, Homestead |
| Weston Homestead |
| Weston, Samuel, Homestead |
| West Paris Lodge No. 15, I.O.O.F. |
| Westport Community Church |
| West Street Historic District |
| Whaleback Light Station |
| Wharf House |
| Wheelwright Block |
| White, E. B., House |
| Whitehead Lifesaving Station |
| Whitehead Light Station |
| Whitehouse Block |
| White, James P., House |
| White Memorial Building |
| Whiting, Samuel Kidder, House |
| Whitlocks Mill Light Station |
| Whitman Memorial Library |
| Whitney, Capt. Joel, House |
| Whitney Farm |
| Whitney Park Historic District |
| Whitneyville Congregational Church |
| Wiggin, Kate Douglas, House |
| Wilder, Benjamin C., House |
| Wiley, Benjamin, House |
| Wiley, James Sullivan, House |
| Williams Block |
| Williams, Gen. John, House |
| Williams, John, House |
| Williams, Timothy and Jane, House |
| Williston-West Church and Parish House |
| Wing Family Cemetery |
| Winn Road School |
| Winter, Amos G., House |
| Winter Harbor Light Station |
| Winterport Congregational Church |
| Winterport Historic District |
Data from United States Park Service and Wikidata
