AHA, Aha, or aha may refer to:

Arts, entertainment and media

a-ha A-ha (often stylised as ''a''-h''a''; ) is a Norwegian synth-pop band formed in Oslo in 1982. Founded by Paul Waaktaar-Savoy (guitars and vocals), Magne Furuholmen (keyboards, guitars and vocals), and Morten Harket (lead vocals), the band ros ...

, a Norwegian pop music band *

Aha (streaming service) Aha (stylised as aha) is an Indian over-the-top streaming service which offers Telugu and Tamil-language content. It is owned by Arha Media & Broadcasting Private Limited, a joint venture between Geetha Arts and My Home Group. The 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 Imogen Jennifer Jane Heap ( ; born 9 December 1977) is an English musician, singer, songwriter, record producer, and entrepreneur. She is considered a pioneer in pop music, particularly electropop, and in music technology. While attending the ...

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 Atlantic Hockey America (AHA) is a college ice hockey conference which operates primarily in the northeastern United States. It participates in NCAA Division I as an ice hockey-only conference. The conference was formed in 2023 by the merger of ...

, 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 *

Administration for a Healthy America The Administration for a Healthy America (AHA) is a planned operating agency within the U.S. Public Health Service in the Department of Health and Human Services (HHS), to be created as part of the HHS reorganization of 2025 under the administr ...

, 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 The American Heart Association (AHA) is a nonprofit organization in the United States that funds cardiovascular medical research, educates consumers on healthy living and fosters appropriate Heart, cardiac care in an effort to reduce disability ...

, 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 American Historical Association (AHA) is the oldest professional association of historians in the United States and the largest such organization in the world, claiming over 10,000 members. Founded in 1884, AHA works to protect academic free ...

, 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 The American Hospital Association (AHA) is a health care industry trade group. It includes nearly 5,000 hospitals and health care providers. The organization, which was founded in Cleveland, Ohio in 1898, with offices in Chicago, Illinois and W ...

, a trade group founded in 1898 to the promote health care industry *

American Humane Association The American Humane Society (previously American Humane), is an American animal welfare organization founded in 1877 that works to rescue, care for, and protect animals by taking action wherever and whenever they are in need. It was previously ...

, an organization founded in 1877 dedicated to the welfare of animals and children *

American Humanist Association The American Humanist Association (AHA) is a 501(c) organization, non-profit organization in the United States that advances secular humanism. The American Humanist Association was founded in 1941 and currently provides legal assistance to defe ...

, 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 The Atlanta Housing Authority (AHA) is an agency that provides affordable housing for low-income families in Atlanta. Today, the AHA is the largest housing agency in Georgia (U.S. state), Georgia and one of the largest in the United States, servi ...

, 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 Hor-Aha (or Aha or Horus Aha; ) is considered the second pharaoh of the First Dynasty of Egypt by some Egyptology, Egyptologists, while others consider him the first one and corresponding to Menes. He lived around the 31st century BC and is thoug ...

, 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 Alpha hydroxy carboxylic acids, or α-hydroxy carboxylic acids (AHAs), are a group of carboxylic acids featuring a hydroxy group located ''one'' carbon atom away from the acid group. This structural aspect distinguishes them from beta hydroxy aci ...

, 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 The Rhind Mathematical Papyrus (RMP; also designated as papyrus British Museum 10057, pBM 10058, and Brooklyn Museum 37.1784Ea-b) is one of the best known examples of ancient Egyptian mathematics. It is one of two well-known mathematical papyr ...