Arizona - Role: Building
| Martin/Ling House |
| Masonic Hall |
| Masonic Temple |
| Masonic Temple |
| Master Mechanic's House |
| Matthews Hall |
| Matus, Antonio, House and Property |
| Mayer Apartments |
| Mayer Business Block |
| Mayer Red Brick Schoolhouse |
| Mayhew, Carmelita, House |
| McClintock, James H., House |
| McCornack, Colonel Willard H., House |
| McCullough-Price House |
| McFadden, Phillip G. House |
| McGee, James and Mary, House |
| McNair, Jonas, House |
| Mediterranean Style House |
| Mediterranean Style House |
| Meehan/Gaar House |
| Mee, Joe, House |
| Men's Gymnasium, University of Arizona |
| Mesa Journal-Tribune FHA Demonstration Home |
| Mesa Woman's Club |
| Methodist Episcopal Church |
| Methodist Parsonage |
| Mexican Consulate |
| Miami Community Church |
| Miller, Hugo, House |
| Miller, Pryor, House |
| Milligan House |
| Ming, A.B., House |
| Moeur, Gov. Benjamin B., House |
| Moeur, W. A., House |
| Mohave County Courthouse and Jail |
| Mohave County Hospital |
| Mohawk Valley School |
| Monroe School |
| Monte Vista Lookout Cabin |
| Montezuma Hotel |
| Moqui Lookout Cabin |
| Moqui Ranger Station |
| Morgan, David-Bronson, Earl A., House |
| Morgan House |
| Morin House |
| Mormon Church |
| Morrison House |
| Morristown Store |
| Morrow-Hudson House |
| Mountain States Telephone and Telegraph Exchange Building |
| Mountain View Officers' Club |
| Muheim House |
| Mullen, C. P., House |
| Mulvenon Building |
| Municipal Light Plant |
| Museum of Northern Arizona Exhibition Building |
| Naco Border Station |
| Natural Bridge Lodge |
| Navajo County Courthouse |
| Navajo Nation Council Chamber |
| Negrette House |
| Nogales Electric Light, Ice & Water Company Power House |
| Nogales High School |
| Nogales Steam Laundry Building |
| Nohlechek, Rhoda, House |
| Noon, A. S., Building |
| Norton House |
| Norton, John H., and Company Store |
| Oasis Court |
| Oatman Drug Company Building |
| O'Brien, Mathew, House |
| O'Connor, Sandra Day, House |
| Oddfellows Home |
| Officer's Quarters |
| Old Adobe Patio |
| Old Barber Shop |
| Old Brick Post Office |
| Old Governor's Mansion |
| Old Library Building |
| Old Main, University of Arizona |
| Old Nogales City Hall and Fire Station |
| Old Presbyterian Church |
| Old Tubac Schoolhouse |
| Olney, George A/Everett E. Ellinwood House |
| Olney, George A., House |
| O'Neill, Buckey, Cabin |
| Ong's, Jim, Market |
| Ong Yut Geong Wholesale Market |
| Orpheum Theater |
| Ortiz House |
| Osborn, William Lewis, House |
| Otis House |
| Our Lady of Guadaloupe Church |
| Our Lady of Perpetual Help Mission Church |
| Our Lady of the Blessed Sacrament Church |
| Our Lady of Victory Catholic Church |
| Owen Homesite |
| Ox Bow Inn |
| Packer, Alonzo Hamilton, House |
| Painted Desert Inn |
Data from United States Park Service and Wikidata
