Trotternish or Tròndairnis ( Scottish Gaelic) is the northernmost peninsula of the Isle of Skye, in Scotland.
One of its more well-known features is the Trotternish landslip, a massive landslide that runs almost the full length of the peninsula, some . The landslip contains two of Skye's most famous landmarks: the Old Man of Storr, an isolated rocky pinnacle, and the Quiraing, an area of dramatic and unusual rock formations. The summit of The Storr, on whose slopes the Old Man of Storr is located, is the highest point of the peninsula. While boasting many vertical heights, the area is mainly unsuitable for rock-climbing due to the friable rock.
The most northerly point of Trotternish, Rubha Hùinis, is also the most northerly point of Skye. The three major settlements on Trotternish are Portree (generally regarded as the capital of Skye), Uig and Staffin.
Trotternish is one of 40 National Scenic Areas in Scotland.