| Acronym | Definition |
|---|
| HTSA➣Home Theater Specialists of America (trade organization) |
| HTSA➣Heat Treat System Assessment |
| HTSA➣Host-Tenant Support Agreement |
| HTSA➣Seaman Apprentice, Hull Maintenance Technician Striker (Naval Rating) |
| HTSA➣High Throughput Screening Assay |
| HTSA➣High-Temperature Solar Array |