| Henry Wadsworth Longfellow |
Greater Portland & Casco Bay |
| Hilda Edwards Hamlin (Lupine Lady) |
Midcoast & Islands |
| Hirundo Wildlife Refuge |
|
| Historic Poland Spring |
Maine's Lakes & Mountains |
| Historic Sporting Camps |
Maine's Lakes & Mountains |
| Historic Windjammer Fleet |
Midcoast & Islands |
| Immigration |
Greater Portland & Casco Bay, Statewide |
| Indigo Arts Alliance |
Greater Portland & Casco Bay |
| Jefferson Cattle Pound |
Midcoast & Islands |
| Joan Benoit Samuelson |
Greater Portland & Casco Bay |
| Joanna Carver Colcord |
Midcoast & Islands |
| John Alfred Poor & Henry Varnum Poor |
Maine's Lakes & Mountains |
| John Calvin Stevens |
Greater Portland & Casco Bay, Statewide |
| John Ford |
Greater Portland & Casco Bay |
| Johnson Hall Opera House |
Kennebec Valley |
| Jonathan Fisher House |
Downeast & Acadia |
| Jonathan Hamilton House |
The Maine Beaches (Southern Coast) |
| Joseph Treat |
Kennebec Valley |
| Joshua Lawrence Chamberlain |
Greater Portland & Casco Bay |
| Katahdin Iron Works |
The Maine Highlands |
