The bar stool is a type of high and narrow stool, often with footrest, which due to its height and narrowness are designed to be used in pubs and bars, accompanied by a high table or bar. However, bar stools are increasingly popular in homes, typically located at the kitchen counter (Kitchen (room)), breakfast nook), or in a home bar.

There are many different constructions. Bar stools are usually made of wood or metal. There are stools with and without armrests, backrest, and padding on the seat base. The designs range from simple wooden ones to extremely detailed ones with a certain height for perfect fit. Extra high and extra low bar stools are common features, as well as indoor and outdoor ones.