White Knob | |
  | |
| Location | Custer County, Idaho |
|---|---|
| Nearest city | Mackay, Idaho |
| Coordinates | 43°53′59.2″N 114°41′09.8″W / 43.899778°N 114.686056°W |
| Built | 1884 |
| NRHP reference No. | 76000671[1] |
White Knob, Idaho is a ghost town in Custer County, Idaho. It is situated on Mine Hill between the town of Mackay, Idaho and the White Knob Mountains in the Pioneer Mountains.