Slieve League, or Slieve Liag, is a mountain on the Atlantic coast of County Donegal, Ireland.

At 601 metres (1,972 ft), it has some of the highest sea cliffs on the island of Ireland. Although less famous than the Cliffs of Moher in County Clare, Slieve League's cliffs reach almost three times higher.

Slieve League is often photographed from a viewpoint known as Bunglass. It can be reached by means of a narrow road that departs from Teelin, just outside Killybegs.

The final few kilometres of this route is built along a precipice and provides spectacular views.

Slieve League is a walker’s paradise and offers various trails for different skill and fitness levels. 
The famous One Man’s Path loops around onto the Pilgrim’s Path and is not for the faint-hearted. 
Brave the One Man’s Path and experienced walkers will reach the summit of the majestic cliffs, where they can gaze over the sea from a high vantage point and soak up the terrific panoramic views of the Atlantic Ocean, the Sligo Mountains and Donegal Bay

The Slieve League Cliffs Centre is family-run centre packed full of local history and culture. The craft shop stocks locally made knitwear and artworks and, come summertime, you can even catch a traditional Irish music session.