COSL
| Acronym | Definition |
|---|---|
| COSL | Complementary Output Switching Logic |
| COSL | College of Operational and Strategic Leadership (US Naval War College; Newport, RI) |
| COSL | Chemistry Operations Support Laboratory (Rocky Flats) |
| COSL | Certificate of Safe Load |
| COSL | Commander, Oceanographic Systems, Atlantic |
| COSL | Committee on Student Life |