TSIA
| Acronym | Definition |
|---|---|
| TSIA | Taiwan Semiconductor Industry Association |
| TSIA | Technology Services Industry Association |
| TSIA | Triple Sugar Iron Agar |
| TSIA | Title Says It All |
| TSIA | Teleservices Industry Association |
| TSIA | Ted Stevens International Airport (Anchorage, Alaska) |
| TSIA | Transport Safety Investigation Act 2003 (Australia) |