| Tuscarora Mountain Tunnel | |
| Lanes: | 4 |
| Location: | Tuscarora Mountain, Franklin / Huntingdon counties, Pennsylvania, USA |
| Operator: | Pennsylvania Turnpike Commission |
| Length: | or [1] |
| Height: | (estimated) |
| Toll: | Tolls vary by location of entry and exit of turnpike, E-ZPass available |
| Coordinates: | 40.0892°N -77.8446°W |
| Crosses: | Tuscarora Mountain |
Tuscarora Mountain Tunnel is one of four original Pennsylvania Turnpike tunnels still in active use. A second tube was bored in the late 1960s to ease traffic conditions. The Tuscarora Mountain tunnels measure in length and are the second-longest active tunnels on the Pennsylvania Turnpike system. The 1.3adj=midNaNadj=mid Sideling Hill Tunnel is the longest overall, but was abandoned in 1968. Allegheny Mountain Tunnel is the longest in active use. The Tuscarora Mountain Tunnel sits on the Huntingdon/Franklin County line.