Equestrian tack, which is also called horse tack, is any equipment and accessories that is worn by a horse that is domesticated. Saddles, bridles, bits, stirrups, halters, driving harness, reins, martingales and breastplates are equestrian tacks. Equestrian tacks are found or bought in a saddlery, which carries supplies for riders and horses. The words tacking up refer to equipping of horse with tack, such as grooming and putting on the riding equipment.

A saddle, which is a primary tack piece, refers to a seat fastened on the back of the horse and is used by a rider for support in horseback riding. Saddles have several types but the two basic types are the English saddles and the Western saddles. Each type includes several different styles of saddles, which have different features. Saddles vary according to the purpose by which each was made for.

A bridle is a set of leather straps fitted to a horses head to be used by riders in directing the horse. It consists of the headstall that holds the bit and the reins that are attached to the bit. A bit is a part of the bridle that goes in the mouth of the horse. Some bridles have nosebands instead of bits.

A stirrup is a ring with a flat bottom that is fixed on a leather strap. Usually, there are two stirrups that hang on either side of a saddle by an adjustable strap. Stirrups serve as footrest for a person riding a horse. These also provide support for the rider and serve as an aid in mounting.

A halter, sometimes called headcollar, is a headgear that is made of rope or leather straps that fits around the head or neck of the horse. It consists of a noseband and headstall and is used to lead or secure the horse. It is fitted behind the ears and around the muzzle, allowing the horse to be led or tied.

A rein is a leather strap or rope that is attached to a bridle via either a bit or a noseband. It is used to direct a horse for riding or driving. It is the means by which a rider communicates directional commands to the horses head. The most common materials used in making reins are leather, nylon and metal.

A harness refers to a set of devices and straps that attaches a horse to various horse-drawn vehicles such as cart, carriage, wagon, sledge or any other load. There are two main categories of horse harness, the breaststrap or the breastcollar design and the collar and hames design. The breaststrap or the breastcollar design is used for lighter loads. For heavy draft work, the collar and hames design is ideal.

A martingale is a piece of equipment that keeps a horse from raising its head too high. It can also prevent the horse form throwing its head back. The two common types of martingale are the standing martingale or the head check and the running martingale or the ring.

A breastplate is a crucial piece of safety equipment as it prevents the saddle from shifting. It is attached to the front of the saddle and has a strap that runs between the horses front legs and attaches to the girth.