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

Look up hat in Wiktionary, the free dictionary.

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.
If an internal link led you here, you may wish to change the link to point directly to the intended article.