| Stillbrook Hill | |
| Elevation M: | 514 |
| Elevation Ref: | [1] |
| Prominence M: | 79 |
| Location: | Offaly, Republic of Ireland |
| Map: | island of Ireland |
| Map Relief: | yes |
| Range: | Slieve Bloom Mountains |
| Coordinates: | 53.0771°N -7.6106°W |
| Topo: | OSi Discovery 54 |
| Type: | sandstone, grit and claystone |
Stillbrook Hill is a mountain in Offaly, Ireland. With a height of 514 metres (1,686 ft) it is the second highest mountain in the Slieve Bloom Mountains after Arderin and the 520th highest summit in Ireland. It is the second highest mountain in Offaly.