The Danbury Hat Industry refers to the historical production of hats in Danbury, Connecticut, which became a significant center for hat manufacturing in the 19th and early 20th centuries. The industry thrived due to the availability of local materials and skilled labor, producing a variety of hats, including top hats, fedoras, and straw hats. At its peak, the Danbury hat factories employed thousands of workers and contributed to the city's economy. The industry faced challenges in the mid-20th century due to competition and changing fashion trends, leading to a decline in production and the eventual closure of many factories.