CLSS
| Acronym | Definition |
|---|---|
| CLSS | Closed Life Support System |
| CLSS | Combat Logistic Support Squadron (US DoD) |
| CLSS | Closed Center Load Sensing System |
| CLSS | Certified Lodging Security Supervisor |
| CLSS | Clandestine Laboratory Seizure System (US DOJ) |
| CLSS | Combat Logistics Support System |
| CLSS | Certified Lean Six Sigma (Black Belt exam) |