| Country: | Scotland |
| Official Name: | Altandhu |
| Gaelic Name: | Alltan Dubh |
| Os Grid Reference: | NB989123 |
| Map Type: | Scotland |
| Coordinates: | 58.0547°N -5.4096°W |
| Unitary Scotland: | Highland |
| Constituency Westminster: | Ross, Skye and Lochaber |
| Constituency Scottish Parliament: | Caithness, Sutherland and Ross |
| Postcode District: | IV26 2 |
| Postcode Area: | IV |
Altandhu is a small hamlet, overlooking the sea loch, Loch an Alltain Duibh to the west, on the western shore of the Rubha Mor Peninsula, in the Achiltibuie area, in Ullapool, Ross-shire, Scotland, within the Scottish council area of Highland.
Altandhu lies 30NaN0 southeast of Reiff, 20NaN0 northwest of Polbain and about 60NaN0 from the main village of Achiltibuie along the coast road to the east.
Despite its relatively small size, there are a number of interesting local attractions, including the Am Fuaran bar,[1] and Port Beag Chalets.[2] 2011 film The Eagle filmed on location amongst the landscapes surrounding Alandhu, including Achnahaird Bay.[3]