| Beinn Trilleachean | |
| Elevation M: | 840 |
| Elevation Ref: | [1] |
| Prominence M: | 478 |
| Listing: | Corbett, Marilyn |
| Location: | Highland and Argyll and Bute, Scotland |
| Range: | Grampian Mountains |
| Coordinates: | 56.548°N -5.1151°W |
| Grid Ref Uk: | NN086438 |
| Topo: | OS Landranger 50 |
Beinn Trilleachean (840 m) is a mountain in the Grampian Mountains, north of the village of Taynuilt at the head of Loch Etive. It lies on the border of Highland and Argyll and Bute in Scotland.
A very rocky peak, it is best known for the rock climbing opportunities on the slabs above Loch Etive, which are known as the 'Etive Slabs'.[2]