Rubha an Dùnain or Rubh' an Dùnain is an uninhabited peninsula to the south of the Cuillin hills on the island of Skye in Scotland. This headland rises to over 30 metres (98 ft) above sea level. Loch na h-Airde is a body of freshwater that is situated to the east of the peninsula close to the sea shore. To its north is Camas a' Mhùrain (bay of the marram grass).
There is a variety of archaeological sites dating from the Neolithic onwards. The name of the peninsula is Gaelic—the meaning of Rubha an Dùn is evidently "headland of the fort" but the last syllable is less clear. In a different context, Mac an Tàilleir suggests Dunain may mean either "bird's hill" or "John's fort".