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 , see Time in Argentina Horn of Africa (HoA), a peninsula in East Africa hoa, a title for Muisca rulers