TISL
| Acronym | Definition |
|---|---|
| TISL | Tennessee Intercollegiate State Legislature |
| TISL | Trouble in Shangri-La (Stevie Nicks album) |
| TISL | Telecommunications and Information Sciences Laboratory (est. 1983; University of Kansas) |
| TISL | Tata Internet Services, Ltd. (India) |
| TISL | Tata Information Systems Limited |
| TISL | Target Identification System, Laser |