Luing (Gaelic: Luinn) is one of the Slate Islands, Firth of Lorn, in the west of Argyll in Scotland, about 16 miles south of Oban. The island has an area of 1,430 hectares (5.5 sq mi) and is bounded by several small skerries and islets. It has a population of around 200 people, mostly living in Cullipool, Toberonochy (Tobar Dhonnchaidh), and Blackmillbay.
For such a small island, Luing has produced numerous mod gold medallists: Nan MacInnes (1926, in Oban), Sandy Brown (1938, in Glasgow) and Hughie MacQueen (1985, in Lochaber).
Luing cattle were first developed here, as a commercial beef breed hardy enough to prosper under adverse weather. They are a breed of red beef cattle, produced by the Cadzow family in 1947 from a cross between Beef Shorthorn and Highland cattle.
According to Haswell-Smith (2004) the name "Luing" may derive from the Old Norselyng, meaning "heather" or long meaning ship. However, Mac an Tàilleir (2003) states "this is probably a pre-Gaelic name of unclear meaning."
In the early part of the Christian era Luing would have formed part of the Gaelic kingdom of Dalriada. From the 9th to 13th centuries almost all of the Hebrides came under the control of Norse settlers and formed part of the Kingdom of the Isles. However, when Edgar of Scotland signed a treaty with Magnus Barefoot in 1098, formally acknowledged the existing situation by giving up Scottish claims to the Hebrides and Kintyre, Luing and Lismore were retained by the Scots.
The graveyard at the ruined church of Kilchattan documents the lives of past islanders, with quarriers, sailors and crofters side by side. Gravestones of note include those of Covenanter Alexander Campbell.