| Acronym | Definition |
|---|
| CTLS➣Central Texas Library System (Austin, TX) |
| CTLS➣Center for Teaching and Learning Services (various locations) |
| CTLS➣Constrained Total Least Squares (method) |
| CTLS➣Centre for Transnational Legal Studies (Georgetown Law; Georgetown University; Washington, DC) |
| CTLS➣Centre for Theatre Laboratory Studies (est. 2002; Denmark) |
| CTLS➣Concurrent Theater Level Simulation |