| Rank | Abbreviation | Meaning |
|---|
| ***** | CSLS | Circuit and System-Level Synthesis
| |
| ***** | CSLS | Cognitive Science Library Search
| |
| ***** | CSLS | County Shared Library Services
| |
| ***** | CSLS | Covariance Shaping Least-Squares
| |
| ***** | CSLS | Centre for Socio-Legal Studies
| |
| **** | CSLS | Coding Solvability and Linear Solvability
| |
| **** | CSLS | Cambridge Specialist Laboratory Services
| |
| **** | CSLS | Center for Strategic Leadership Studies
| |
| **** | CSLS | Center for the Study of Law & Society
| |
| **** | CSLS | Conference on the State of Living Standards
| |
| **** | CSLS | Center for the Study of Living Standards
| |
| **** | CSLS | Centre for the Study of Living Standards
| |
| **** | CSLS | Long/Short Liquid Idx ETN Credit Suisse (American Stock Exchange [AMEX])
| |
| **** | CSLS | Community Supportive Living Systems
| |
| **** | CSLS | Comic Shop Locator Service
| |
| **** | CSLS | Central States Little Sister
| |
| **** | CSLS | Clinical Speech and Language Studies
| |
| **** | CSLS | Cub Scout Leader Specific
| |
| **** | CSLS | Cesky Svaz Lyzarskych Skol
| |
| **** | CSLS | China Society for Library Science
| |
| **** | CSLS | Center for Southeast Louisiana Studies
| |
| **** | CSLS | Chemical Structure Lookup Service
| |
| **** | CSLS | Contractor State License Service
| |
| *** | CSLS | Caledon Sanitary Landfill Site
| |
| *** | CSLS | Comar and Sons Limited School
| |