DHA, Dha and dha may refer to:

Chemicals

  • 3,4-Dihydroxyamphetamine, an amphetamine derivative
  • Docosahexaenoic acid, a 22:6 omega-3 fatty acid
  • Dehydroandrosterone, an endogenous androgenic steroid
  • Dehydroascorbic acid, an oxidized form of ascorbic acid
  • Dehydroacetic acid, a pyrone derivative used as a plasticiser, as a fungicide, as a bactericide, and as a food preservative
  • Dihydroxyacetone, the active ingredient in sunless or self-tanning skincare products
  • 9,10-Dihydroanthracene, a form of anthracene whose center-ring carbons have been reduced
  • Dihydroartemisinin, an antimalarial
  • Dihydroalprenolol, a beta-adrenergic blocker
  • Dehydroalanine, an uncommon unsaturated α-amino acid

Organizations

  • Defence Housing Australia, a provider of family housing for members of the Australian Defence Forces
  • Defence Housing Authority, provides commercial and residential housing developments for the Pakistani army
  • Defence Housing Authority, Islamabad
  • Defence Housing Authority, Karachi
  • Defense Health Agency, the United States Department of Defense agency responsible for managing the activities of the Military Health System
  • Department of Humanitarian Affairs, now known as the United Nations Office for the Coordination of Humanitarian Affairs
  • DHA Cinema, a movie theatre in Lahore, Pakistan
  • District health authority, a former type of administrative organisation of the NHS in England and Wales
  • Drug Houses of Australia, a Singapore pharmaceuticals manufacturer
  • Demirören Haber Ajansı (Demirören News Agency), a Turkish news agency

Linguistics

  • Dha (Indic), a glyph in the Brahmic family of script
  • Dha (Javanese) (ꦝ), a letter in the Javanese script

Other

  • Dah, Ladakh, a village in the Leh district of India.
  • Dhahran International Airport, military airbase in Dhahran, Saudi Arabia
  • Dha (sword), a single-edged weapon found in Burma/Myanmar, Thailand and other parts of Southeast Asia
  • Directory Harvest Attack, a method used by spammers to obtain email addresses
  • Disarmament as Humanitarian Action, a research project carried out at the United Nations Institute for Disarmament Research
  • Doctor of Health Administration, a doctoral degree
  • D.Ha., an abbreviation used for the United States District Court for the District of Hawaii