| 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 |