| Acronym | Definition |
|---|
| TISA➣Top Image Systems, Ltd. (stock symbol; formerly TPM) |
| TISA➣Tax Incentivised Savings Association (UK) |
| TISA➣Transitional Islamic State of Afghanistan |
| TISA➣Trade in Services Act |
| TISA➣Troop Issue Subsistence Activity |
| TISA➣Traveller Information Services Association |
| TISA➣Time Interpolation and Spatial Averaging |
| TISA➣Truth in Savings Act of 1991 |
| TISA➣Trent International Student Association |
| TISA➣Temporal Interpolation and Spatial Averaging |
| TISA➣Total Interior Systems of America |
| TISA➣Tottenham Independent Supporters' Association (UK) |
| TISA➣Telecom Industries Service Association (India) |
| TISA➣Technique for Interactive Systems Analysis |
| TISA➣The Institute for Social Accountability (Kenya) |