A medal ribbon, service ribbon or ribbon bar is a small ribbon, mounted on a small metal bar equipped with an attaching device, which is generally issued for wear in place of a medal when it is not appropriate to wear the actual medal. Each country's government has its own rules on what ribbons can be worn in what circumstances and in which order. This is usually defined in an official document and is called "the order of precedence" or "the order of wearing." In some countries, some awards are "ribbon only," having no associated medal.

A ribbon or riband is a thin band of material, typically cloth but also plastic or sometimes metal, used primarily as decorative binding and tying. Cloth ribbons are made of natural materials such as silk, cotton, and jute and of synthetic materials, such as polyester, nylon, and polypropylene. Ribbon is used for useful, ornamental, and symbolic purposes. Cultures around the world use ribbon in their hair, around the body, and as ornament on non-human animals, buildings, and packaging. Some popular fabrics used to make ribbons are satin, organza, sheer, silk, velvet, and grosgrain.