| Blue | 1921 m | | Seven Devils Mountains |
| Bald | 2837 m | | Boise Mountains |
| Bradley | 2211 m | | Bannock Range |
| Brush Hill | 1411 m | | Clearwater Mountains |
| Wilderness Peak | 2876 m | | Bear River Range |
| Bannock Peak | 2517 m | | Deep Creek Mountains |
| Bowery Peak | 3309 m | | Boulder Mountains |
| Alder Creek Summit | 1485 m | | Boise Mountains |
| Big Butte | 1185 m | | Craig |
| Bald | 1914 m | | Owyhee Mountains |
| Black | 3105 m | | Lionshead-Henrys Lake Ranges |
| Bishop | 2382 m | | Centennial Mountains |
| Birch Hill | 1685 m | | Northern Bitterroot Range |
| Boulder | 1722 m | | Priest Lake Selkirks |
| Arange Peak | 2659 m | | Centennial Mountains |
| Box Car | 2283 m | | South Clearwater Mountains |
| Beaver Peak | 1638 m | | Cour d'Alene Mountains |
| Battle Ground | 687 m | | South Clearwater Mountains |
| Black Pine | 1160 m | | Mount Spokane |
| Border Mountain | | | Main Idaho Purcell Mountains |