Muldoanich is an uninhabited island in the Bishop's Isles at the southern extremity of the larger island chain of the Outer Hebrides in Scotland. It is 78 ha in area and rises to a maximum height of 153 m at the peak of Cruachan na h-àin ("midday hill").

Muldoanich is about 4 km southeast of Castlebay, the main port on the island of Barra. It is a prominent landmark for the approaching