| Acronym | Definition |
|---|
| RTSL➣Run Think Shoot Live (gaming) |
| RTSL➣Radio Timeslot |
| RTSL➣Reuters Transaction Services Limited (Thomson Reuters) |
| RTSL➣Real-Time Systems Laboratory |
| RTSL➣Real-Time Shading Language (Stanford University) |
| RTSL➣Real Time Systems Ltd. (various locations) |
| RTSL➣Ratcliffe Technical Services Limited (Kent, England, UK) |
| RTSL➣Real Time Strategy League (gaming clan) |
| RTSL➣Read the Source, Luke (open source programming) |