The cowboy hat is a high-crowned, wide-brimmed hat best known as the defining piece of attire for the North American cowboy. Today it is worn by many people, and is particularly associated with ranch workers in the western and southern United States, western Canada and northern Mexico, with many country, regional Mexican and sertanejo music performers, and with participants in the North American rodeo circuit. It is recognized around the world as part of Old West apparel.

The cowboy hat as known today has many antecedents to its design, including Mexican hats such as the sombrero, the various designs of wide-brimmed hat worn by farmers and stockmen in the eastern United States, as well as the designs used by the United States Cavalry.