Montana - Area of significance: Architecture
| West Fork Ranger Station |
| Westgate Village Shopping Center |
| West Side Historic District |
| West Side Historic District |
| West Side Residential District |
| West Yellowstone Oregon Shortline Terminus Historic District |
| Wetzstein/Tipton Ranch |
| Whaley Homestead |
| Wheeler, Burton and Lulu, Cabin |
| Wibaux Commercial Historic District |
| Wick-Seiler House |
| Williams House |
| Williams, John and Ann, House |
| Wilma Theatre |
| Wilson House |
| Winnett Block |
| Winnett School |
| Wold Barn |
| Wolf Creek Hotel |
| Woll House |
| Wurtz Homestead |
| Yegen, Christian, House |
| Yegen, Peter, House |
| Yellowstone Bighorn Research Association Camp |
| Yodeler Motel |
| Young-Almas House |
| Young, Alvin, Barn and Cabin Historic District |
| Young, Benjamin, House |
| Young Brothers Chevrolet Garage |
| Young Women's Christian Association (Independent) |
| Yucca Theatre |
| Zion Swedish Evangelical Lutheran Church |
| Zip Auto |
| Zortman Ranger Station Historic District |
Data from United States Park Service and Wikidata
