a river of Scotland, rises in a small loch of the same name, in Inverness-shire, between Lochs Laggan and Lochy, and flows in a N.E. direction through the valley called from it Strathspey. Its upper course is in the county of Inverness; it then traverses that of Moray for a short distance, and finally separates Moray from Banff. After a course of about 96 miles it falls into the Moray Firth, a little to the east of Lossiemouth. It receives many small streams, but none of any size or importance. Though at first it is a sluggish stream, in the lower part of its course it is one of the most rapid in Scotland, and this renders it difficult of navigation. Large quantities of timber, however, are floated down the Spey. The river abounds in salmon, and the fisheries in it are very valuable.