A straw hat is a wide-brimmed hat woven out of straw or straw-like synthetic materials. Straw hats are a type of sun hat designed to shade the head and face from direct sunlight, but are also used in fashion as a decorative element or a uniform.

A hat is a head covering which is worn for various reasons, including protection against weather conditions, ceremonial reasons such as university graduation, religious reasons, safety, or as a fashion accessory. Hats which incorporate mechanical features, such as visors, spikes, flaps, braces or beer holders shade into the broader category of headgear.