A bucket hat, fishing hat or beanie hat, is a soft cotton hat with a wide and downwards sloping brim which is worn by both men and women. The brim offers shade from the sun for the eyes and face. The hat is usually made from heavy-duty cotton fabric such as denim or canvas. Two metal eyelets are commonly placed on each side of the hat so that it is cool to wear on hot days.

A similar hat is used officially by the U.S. Navy for enlisted service dress uniforms, commonly referred to as a Dixie Cup hat, as in the manufacturer brand. Bucket hats are favored by glider pilots, who require shade in their cockpits but cannot wear wide-brimmed hats because they must be able to see in all directions.

In the UK this style of hat is occasionally known as a "Reni Hat" after The Stone Roses drummer "Reni" (Alan Wren) who was easily identified by his bucket hat.

In Australia, this hat is referred to as a giggle hat. In Tanzania, it is very popular among elders, especially among the Iraqw people.

In South Africa, it is known as ispoti and is very popular with urban black youth, representing being streetwise without copying foreign hip-hop trends.

In Israel, it is known as a "Rafael hat"; as Rafael Eitan, an Israeli general, politician, and former Chief of Staff of the Israel Defense Forces used to wear one. A similar type of hat called a Tembel hat is dubbed the national hat of Israel as it was worn by Israeli Halutzim to protect from sun burn.

In Sweden, it is known as Beppehatt or Beppemössa; since Beppe Wolgers, a Swedish author and artist, used to wear it and made it popular in the 1970s.