Blended Scotch whisky constitutes over 90% of the whisky produced in Scotland. Blended Scotch whiskies generally contain 10–50% malt whisky, blended with grain whisky, with the higher quality brands having the highest percent malt.

They were initially created for the English market, where pure malt whiskies were considered too harshly flavoured (the main two spirits consumed in England at the time being brandy in the upper classes, and gin in the lower ones).

Master blenders combine the various malts and grain whiskies to produce a consistent "brand style". Blended whiskies frequently use the same name for a range of whiskies at wildly varying prices and (presumably) quality.

Notable blended Scotch whisky brands include Dewar's, Johnnie Walker, Cutty Sark, J&B, The Famous Grouse, and Chivas Regal.