Look up hac in Wiktionary, the free dictionary.

HAC may refer to:

• Harrow Arts Centre, London, England
• Humboldt Arts Council

• Hague Adoption Convention, a 1993 international treaty on protection of children and co-operation in respect of intercountry adoption
• High Ambition Coalition, an informal group of approximately 61 countries within the UN Framework Convention on Climate Change (UNFCCC)

• Hakka Affairs Council, of the Republic of China
• House Appropriations Committee, a committee of the United States House of Representatives

• Hadassah Academic College, Jerusalem, Israel
• Hague Academic Coalition
• Honourable Artillery Company, a British Army unit and a charitable organisation
• Higher Attestation Commission, a national government agency in Russia, Ukraine and some other post-Soviet states that oversees awarding of advanced academic degrees
• Humanist Association of Canada
• Sudan Humanitarian Aid Commission
• H.A.C. Inc., parent company of the Homeland chain of supermarkets in the U.S. state of Oklahoma.

• Acetic acid (HAc)
• High acid crude oil, a crude oil with a high concentration of naphthenic acids
• High Alumina Cement (HAC), now known generally as Calcium aluminate cements
• Human artificial chromosome
• Newey–West HAC estimator
• Hierarchical agglomerative clustering, a type of hierarchical clustering
• Lucile Hac (1909–2006), American biochemist and microbiologist

• Hoosier Athletic Conference
• Hóquei Académico de Cambra, a Portuguese rink hockey club
• Le Havre Athletic Club, a French football club
• Horoya AC, a Guinean football club
• Hydra AC, an Algerian football club

• Hachijojima Airport, in the Izu Islands, Japan
• Hackney Downs railway station, in London
• Hokkaido Air System
• Hrvatske autoceste, a Croatian motorway operator
• Hughes Aircraft Company

• Gorani language (ISO 639-3: hac)
• Hectare
• High-availability cluster
• Honorary Air Commodore
• Hospital-acquired condition
• Hot Action Cop, an American band
• Hot adult contemporary, a radio format
• Hyles–Anderson College
• HAC, a product code prefix used for the Nintendo Switch, its software, and accessories

• Hack (disambiguation)

This disambiguation page lists articles associated with the title HAC.
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