Arizona - Criteria: C (architecture/engineering)
| Mormon Church |
| Mormon Flat Bridge |
| Morrison House |
| Morrow-Hudson House |
| Mountain States Telephone and Telegraph Exchange Building |
| Muheim House |
| Mullen, C. P., House |
| Museum of Northern Arizona Exhibition Building |
| Naco Border Station |
| Navajo County Courthouse |
| Navajo National Monument |
| Navajo Nation Council Chamber |
| Navajo Steel Arch Highway Bridge |
| Nogales Steam Laundry Building |
| Noon, A. S., Building |
| Northern Arizona Normal School Historic District |
| Norton, John H., and Company Store |
| Oasis Court |
| O'Brien, Mathew, House |
| Ocean To Ocean Bridge |
| Oddfellows Home |
| Old Adobe Patio |
| Old Barber Shop |
| Old Governor's Mansion |
| Old Library Building |
| Old Main, University of Arizona |
| Old Trails Bridge |
| Old Tubac Schoolhouse |
| Olney, George A., House |
| Ong's, Jim, Market |
| 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 |
| Packer, Alonzo Hamilton, House |
| Painted Desert Community Complex Historic District |
| Painted Desert Inn |
| Palmer, E. Payne, House |
| Palmer, Jordan, House |
| Palm Lane Gardens |
| Pancrazi House |
| Park Avenue Bridge |
| Pauley Apartments |
| Pearce General Store |
| Pemberton, Sarah H., House |
| Peoria High School Old Main |
| Period Revival House |
| Perkinsville Bridge |
| Peter House |
| Petersen, Niels, House |
| Phoenix Building and Loan House |
| Phoenix Carnegie Library And Library Park |
| Phoenix Indian School Historic District |
| Phoenix Towers |
| Phoenix Union High School Historic District |
| Pierce, Harry E., House |
| Pierce, N. Clyde, House |
| Pieri-Elliot House |
| Pierson, Adrian, House |
| Pima County Courthouse |
| Pinal County Courthouse |
| Pinal Ranger Station |
| Pine Creek Bridge |
| Pinedale Ranger Station |
| Pioneer Market |
| Piscorski, Jose, Building |
| Pleasant Valley Ranger Station |
| Portal Ranger Station |
| Post Trader's Store and Riallito House |
| Potter, Dell, Ranch House |
| Power Apartments |
| Presbyterian Church Parsonage |
| Prescott Armory Historic District |
| Prescott Public Library |
| President's House |
| Price, W. Y., House |
| Prochnow House |
| Professional Building |
| Promontory Butte Lookout Complex |
| PS Knoll Lookout Complex |
| Pumphouse Wash Bridge |
| Quartermaster Storehouse |
| Queen Creek Bridge |
| Queen Creek Bridge |
| Querino Canyon Bridge |
| Railroad Addition Historic District |
| Railroad Steam Wrecking Crane and Tool Car |
| Ramada House |
| Rancho Joaquina House |
| Randall, Alfred Jason, House |
| Ranger's Dormitory |
| Rebeil Block |
| Redden, Byron, House |
| Redden, Lowell, House |
| Redfield-Romine House |
| Reppy Avenue Bridge |
| Rialto Building |
Data from United States Park Service and Wikidata
