Look up hat in Wiktionary, the free dictionary.

A hat is an item of clothing worn on the head.

Hat or HAT may also refer to:

• The Hat (film), a 1999 short film by Michèle Cournoyer
• The Hat, a 1912 film by Rollin S. Sturgeon
• The Hat, a 1963 film by Faith Hubley and John Hubley

• Hat matrix, a mathematical operation in statistics
• Hat operator, notation used in mathematics
• Hat function, alternate name for the triangular function
• A solution to the einstein problem, a shape nicknamed the "hat"

• Handball Association of Thailand, governing body of handball in Thailand
• Hutchison Asia Telecom Group, a business division in telecommunications
• Hellenic Aeronautical Technologies, a Greek aeroplane manufacturer
• Helicopter Air Transport, a defunct American helicopter operator

• Jack McVitie (1932–1967), known as Jack "The Hat", English gangster
• Les Miles (born 1953), known as The Hat, American football coach
• Jan Åge Solstad (born 1969), known as Hat, former vocalist for the Norwegian black metal band Gorgoroth

• Hať, Moravian-Silesian Region, Czech Republic
• Hat, Azerbaijan
• Hat, Nepal
• Hat, Berehove Raion, Ukraine
• Hat District, Al Mahrah Governorate, Yemen
• Hat Island (disambiguation)

• Human African trypanosomiasis (sleeping sickness)
• HAt, symbol for hydrogen astatide
• Histone acetyltransferase, an enzyme class
• HAT medium, used in microbiology and immunology, for example in culturing hybridoma cells
• Hungarian-made Automated Telescope, used in the HATNet Project

• Hardware Attached on Top, expansion board format for the Raspberry Pi computer.
• Hashed array tree, in computer programming.
• Help authoring tool, software for "help" documents.

• Handwoordeboek van die Afrikaanse Taal, an Afrikaans dictionary
• Haitian Creole language, with ISO 639-2 and 639-3 code hat
• Hat, slang for the caret (computing) (^)
• Hat, slang for the circumflex (ˆ)
• Hat (Davy Graham album), released in 1969
• Hat. (Mike Keneally album), released in 1992
• History Aptitude Test, an admissions test at Oxford University
• The Hat, a Southern California fast-food restaurant
• The Hat (book), a children's book by Tomi Ungerer
• "The Hat", an episode of Homicide: Life on the Street (season 4)
• Hi-hat (instrument), a standard part of a drum kit
• Short for hatnote - WP:HAT (disambiguation)

• Hats (disambiguation)
• Hatt (disambiguation)
• Het (disambiguation)
• Hett (disambiguation)
• Mr. Hat

This disambiguation page lists articles associated with the title Hat.
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