| O'Leary Peak | |
| Elevation Ft: | 8919 |
| Elevation Ref: | [1] |
| Prominence Ft: | 1778 |
| Prominence Ref: | [2] |
| Location: | Coconino County, Arizona, U.S. |
| Map: | USA Arizona |
| Map Size: | 180 |
| Coordinates: | 35.4015°N -111.5265°W |
| Topo: | USGS O'Leary Peak |
| Volcanic Field: | San Francisco volcanic field |
O'Leary Peak is an extinct Pleistocene lava dome volcano within the San Francisco volcanic field, north of Flagstaff, Arizona,[3] and to the northwest of Sunset Crater National Monument. A fire lookout tower was built on a subsidiary eastern peak. It has an elevation of 8919feet.[1]