| Lyon Mountain | |
| Location: | Hobart, New York, U.S. |
| Coordinates: | 42.3422°N -74.6708°W |
| Coordinates Ref: | [1] |
| Topo: | USGS Hobart |
| Map: | New York#USA |
Lyon Mountain is a mountain located in the Catskill Mountains of New York south of Hobart. Cowan Mountain is located east of Lyon Mountain and Griffin Hill is located north.