HOA

• 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

• ǂHõã language (ISO 639: huc), a Khoisan language of Botswana
• Hoava language (ISO 639: hoa), an Oceanic language of the Solomon Islands

• 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

• Higher-order Ambisonics, a full-sphere surround sound Ambisonics technique
• Hypertrophic osteopathy, a bone disease secondary to cancer in the lungs

• 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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