Spey casting is a casting technique used in fly fishing. Spey casting can be accomplished with either a normal length fly rod, or a rod referred to as a double-handed fly rod, often called a Spey rod. Spey rods can also be used for standard overhead casting.

Spey casting is used for fishing large rivers for salmon and large trout such as steelhead and sea trout. Spey technique is also used in saltwater surfcasting. All of these situations require the angler to cast larger flies long distances. The two-handed Spey technique allows more powerful casts and avoids obstacles on the shore by keeping most of the line in front of the angler.