| Acronym | Definition |
|---|
| TWAS➣Third World Academy of Sciences |
| TWAS➣Thickened Waste Activated Sludge |
| TWAS➣Tyne and Wear Archives Service (record archiving office; UK) |
| TWAS➣The Wessex Autistic Society (UK) |
| TWAS➣Toronto World Arts Scene (Canadian magazine) |
| TWAS➣Time Weighted Average Spread (finance) |