| Acronym | Definition |
|---|
| HTAA➣Har Tzeon Agudath Achim (synagogue; Silver Spring, MD) |
| HTAA➣Hospital Tengku Ampuan Afzan |
| HTAA➣History Teachers' Association of Australia |
| HTAA➣Heart of Texas Apartment Association (Waco, TX) |
| HTAA➣Hamilton Township Athletic Association (Ohio) |