HAA
HAA is the abbreviation for:
- A house alarm
- The Army Defense Agency
- The Herzoglich Arenbergisches Archive
- The height of platform high altidude Airship by Lockheed Martin
Haa is the name of:
- A town in Bhutan, see Haa (Bhutan)
- A district in Bhutan, see Haa (District)
- Haa, a town in Norway, see Hå
HaA was the youngest Hallstatt period
- Disambiguation
- Abbreviation