HOA or Hoa may refer to:
Arts
- Hardwell On Air, a Dutch radio programme
- House of Anubis, a television drama series
- Hands of Asclepius, a fictional organization in the video game Trauma Center: Under the Knife 2
Languages
- ǂHõã language (ISO 639: huc), a Khoisan language of Botswana
- Hoava language (ISO 639: hoa), an Oceanic language of the Solomon Islands
Law and government
- Heads of agreement (law)
- Homeowner association, a private association-like entity
- House of Assembly, the name of several current and former national and sub-national legislatures
Science and technology
- Higher-order Ambisonics, a full-sphere surround sound Ambisonics technique
- Hypertrophic osteopathy, a bone disease secondary to cancer in the lungs
Other uses
- Hoa people, an Overseas Chinese minority group residing in Vietnam
- Horn of Africa (HoA), a peninsula in East Africa
- hoa, a title for Muisca rulers
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