Arizona - Criteria: A (event)
| Stewart Mountain Dam |
| Stinson-Flake House |
| St. John's Episcopal Church |
| St. Joseph Bridge |
| St. Michael's Mission |
| Stoffela Store/Railroad Exchange |
| Stone Avenue Underpass |
| Storage Warehouse |
| Story, F. Q., Neighborhood Historic District |
| Stoughton, Ralph H., Estate |
| Stout's Hotel |
| St. Paul's Episcopal Church |
| Strawberry School |
| Stubbs, Courtney and Hilda, House |
| Suhwaro Hotel |
| Summit Mountain Lookout Tree |
| Sun City DEVCO Model No.1 |
| Sunflower Ranger Staiton |
| Sun Mercantile Building |
| Superintendent's Residence |
| Superintendent's Residence |
| Swindall Tourist Inn |
| Sycamore Ranger Station |
| Tater Point Lookout Tree |
| Telephone Hill Lookout Tree |
| Tempe Hardware Building |
| Tempe Woman's Club |
| Temple Historic District |
| Thirty-Fifth Parallel Route |
| Tipover Lookout Tree |
| Title and Trust Building |
| Tombstone Courthouse |
| Tombstone Historic District |
| Tonto National Monument Visitor Center |
| Tovrea Castle |
| Trans-Canyon Telephone Line, Grand Canyon National Park |
| Treu, John, House |
| Tubac Presidio |
| Tubac Townsite Historic District |
| Tuba Trading Post |
| Tumacacori National Monument |
| Tusayan Lookout Tree |
| Tuzigoot Museum |
| Two Spot Logging Train |
| University Heights Elementary School |
| University of Arizona Campus Historic District |
| Urban Route 66, Williams |
| US Custom House |
| USDA Tucson Plant Materials Center |
| U.S. Inspection Office, Morley Gate-Nogales, Arizona |
| U.S. Post Office |
| US Post Office |
| U.S. Post Office and Courthouse |
| US Post Office and Courthouse-Globe Main |
| US Post Office and Courthouse-Prescott Main |
| US Post Office and Customs House-Douglas Main |
| US Post Office and Immigration Station-Nogales Main |
| US Post Office-Yuma Main |
| UVX Smelter Operations Complex |
| Valley National Bank |
| Valley National Bank Building |
| Velasco House |
| Verde Park Pumphouse |
| Verde River Bridge |
| Verde River Sheep Bridge |
| Vernetta Hotel |
| Volunteer Lookout Cabin |
| Vradenburg, George H., House |
| Walker Charcoal Kiln |
| Walker, J. W., Building-Central Arizona Light & Power |
| Walnut Canyon Bridge |
| Walnut Canyon Dam |
| Walnut Creek Bridge |
| Walnut Creek Ranger Station |
| Water Canyon Administrative Site |
| Water Reclamation Plant |
| Weatherford Hotel |
| Webb Peak Lookout Tower |
| Webster Auditorium |
| Welnick Arcade Market and Liefgreen Seed Company Building |
| Western Wholesale Drug Co. Warehouse |
| West Peak Lookout Tower |
| Whitney, J. T., Funeral Home |
| Whittier, John G., School |
| Wickenburg-Boetto House |
| Wickenburg High School and Annex |
| Wickenburg High School Gymnasium |
| Wigwam Village #6 |
| Wilbur Street Historic District |
| Willcox Women's Club |
| Williams Historic Business District |
| Williams Residential Historic District |
| Wingfield, Hank and Myrtle, Homestead |
| Winkelman Bridge |
| Winslow Underpass |
| Wise, J. E., Building |
| Woman's Club |
| Woodruff Bridge |
| Woody Mountain Lookout Tower |
| Woolsey Ranchhouse Ruins |
Data from United States Park Service and Wikidata
