CHA
- Cambridge Health Alliance
- Canadian Heraldic Authority
- Canadian Heritage Alliance
- Canadian Historical Association
- Canadian Hockey Association (disambiguation)
- Carver–Hawkeye Arena
- Catholic Health Association of the United States
- Certified Hotel Administrator
- Cha (Chinese surname)
- Cha (Indic)
- Cha (Korean surname)
- Cha (album)
- Cha (name)
- Cha University
- Cha-cha-chá (music)
- Cha.
- Chad
- Chah (Cameroon)
- Chamaeleon (constellation)
- Chamorro language
- Charlotte Hornets
- Charlotte, North Carolina
- Chattanooga Metropolitan Airport
- Che (Cyrillic)
- Chestnut Hill Academy
- Chicago Housing Authority
- China Telecom
- Chunta Aragonesista
- Chả
- Circumhorizon arc
- Circumhorizontal arc
- College Hockey America
- College Hockey Association
- Continental Hockey Association
- Cultural Heritage Administration
- Customs house agent
- Kha (Cyrillic)
- United States House Committee on House Administration