Muck (Scottish Gaelic: Eilean nam Muc, pronounced [ˈelan nə ˈmuʰk]) is the smallest of four main islands in the Small Isles, part of the Inner Hebrides of Scotland. It measures roughly 2.5 miles (4 km) east to west and has a population of around 30, mostly living near the harbour at Port Mòr. The other settlement on the island is the farm at Gallanach. The island's only road, about 1.5 miles (2.4 km) long, connects the two.

A causeway and slipway were built at Port Mòr in 2005. This allows vehicles to be driven on and off the Caledonian MacBrayne ferry, MV Lochnevis, which links Muck and its neighbouring Small Isles of Canna, Rùm and Eigg, with the mainland port of Mallaig (2½ hours away). However, visitors are not normally permitted to bring vehicles to the Small Isles. During the summer months the islands are also served by Arisaig Marine's ferry MV Sheerwater from Arisaig, 10 miles south of Mallaig.

The island's main hill is Beinn Airein (137m). Muck is also known for its seal population, and for the porpoises in the surrounding waters. The name may derive from the Gaelic word for porpoise. An earlier owner, who disliked the name, attempted to persuade Samuel Johnson and James Boswell that the authentic name was Isle of Monk.

Scotland (Scottish Gaelic: Alba ([ˈalˠ̪apə]  listen (help·info))) is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the southwest. In addition to the mainland, Scotland constitutes over 790 islands including the Northern Isles and the Hebrides.

Edinburgh, the country's capital and second largest city, is one of Europe's largest financial centres. Edinburgh was the hub of the Scottish Enlightenment of the 18th century, which transformed Scotland into one of the commercial, intellectual and industrial powerhouses of Europe. Glasgow, Scotland's largest city, was once one of the world's leading industrial cities and now lies at the centre of the Greater Glasgow conurbation. Scottish waters consist of a large sector of the North Atlantic and the North Sea, containing the largest oil reserves in the European Union. This has given Aberdeen, the third largest city in Scotland, the title of Europe's oil capital.