Horse gaits are the various ways in which a horse can move, either naturally or as a result of specialized training by humans.

Gaits can be roughly categorized into two groups: the "natural" gaits that nearly every horse will use without special training, and the "amble," or the "ambling" gaits, a collection of several other smooth footfall patterns that may appear naturally in some individuals but which usually occur only in certain breeds, and often require special training of the horse before a rider can request them on command.

Another classification system, applicable to quadrupeds in general, uses the categories of 1) walking gaits (including ambling), 2) running or trotting gaits, and 3) leaping gaits.

The British Horse Society Dressage Rules require competitors to perform 4 variations of the walk, 6 forms of the trot, 5 leaping gaits (all forms of the canter), halt, and rein back but not the gallop. The British Horse Society Equitation examinations also require proficiency in the gallop as distinct from the canter.