Tomdoun is a settlement on the north side of the River Garry, near the western end of Loch Garry, in Glen Garry in the Highlands of Scotland. The name comes from the Gaelic for "the brown hillock".
Tomdoun was historically situated next to the A87 road, the main route to Skye. This road ran along Glen Garry, before heading north at Tomdoun, over the hills to Glen Loyne and Glen Shiel. But Loch Loyne was dammed in the 1950s as part of a hydro-electric scheme, flooding this road. A new road was built further to the east, around Loch Loyne. Now the only road past Tomdoun is a minor road, heading west to the remote village of Kinloch Hourn.