# Aha

AHA, Aha, or aha may refer to:

## 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

## Hockey

* 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

## Organizations

* AHA Foundation, a nonprofit organization for the defense of women's rights
* 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

## People

* Hor-Aha, a First Dynasty Egyptian pharaoh
* Rabbi Aha, fourth century rabbi in the Land of Israel
* Aha bar Jacob, third or fourth century Babylonian rabbi
* Aha b. Rava, fourth or fifth century Babylonian rabbi
* Achai Gaon, also known as Aha of Shabḥa, eighth century Talmudist and scholar

## Science and technology

* 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

## Other uses

* 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)