Aha

AHA, Aha, or aha may refer to:

<templatestyles src="Template:TOC_right/styles.css" />{{#if:|<templatestyles src="Template:TOC limit/styles.css" />}}

Arts, entertainment and media

a-ha, a Norwegian pop music band
Aha (streaming service), an Indian service offering Telugu content
Association of Hispanic Arts, a New York-based non-profit organization that promotes the work of Hispanic artists
"Aha", a 2009 song by British singer Imogen Heap

Amateur Hockey Association, an amateur men's ice hockey league in Canada from 1886 to 1898
American Hockey Association (1926–1942)
American Hockey Association (1992–1993)
Atlantic Hockey America, an NCAA Division I ice hockey conference with men's and women's divisions which operates primarily in the northeastern U.S.
Atlantic Hockey Association, a men-only ice hockey conference which merged into the new Atlantic Hockey America in 2024

AHA Foundation, a nonprofit organization for the defense of women's rights
Administration for a Healthy America, a planned operating agency of the U.S. Department of Health and Human Services
Allianz vun Humanisten, Atheisten an Agnostiker, an association of humanists, atheists and agnostics based in Luxembourg
American Heart Association, a non-profit organization in the US that promotes cardiac care
American Hebrew Academy, an American Jewish pluralistic college preparatory boarding school
American Historical Association, the oldest and largest society of historians in the US
American Homebrewers Association, an American trade group concerned with the promotion of craft beer and homebrewing
American Hospital Association, a trade group founded in 1898 to the promote health care industry
American Humane Association, an organization founded in 1877 dedicated to the welfare of animals and children
American Humanist Association, an educational organization in the US that advances secular humanism
Arabian Horse Association, an organization that registers Arabian horses in the US
Area health authority, a former type of administrative organisation of the NHS in England and Wales
Association of Hispanic Arts, a New York-based non-profit organization that promotes the work of Hispanic artists
Atlanta Housing Authority, an organization to develop, acquire, lease and operate affordable housing
Australian Hotels Association, an employer advocacy and lobby group representing hoteliers around Australia

Alpha hydroxy acid, a class of chemical compounds that consist of a carboxylic acid substituted with a hydroxyl group on the adjacent carbon
Aha (wasp), a genus of Australian wasp
- Aha ha, an Aha species abbreviated as A. ha
Avoid hasty abstractions, a computer programming methodology

Aboriginal Heritage Act 1972, Western Australian legislation also known as the AHA
Aboriginal Heritage Act 1988, South Australian legislation also known as the AHA
Aboriginal Heritage Act 2006, legislation of the state of Victoria, Australia, also known as the AHA
Aha, an Egyptian phrase found on the Rhind Papyrus
Aha (Book of Mormon), a Nephite soldier
Ahanta language (ISO 639-3 code AHA)