| Abbreviation | Definition |
|---|---|
| CLC | Community Learning Center |
| CLC | Community Living Center |
| CLCC | Combined Land Component Command |
| CLCD | Contemporary Life Cycle Development |
| CLCGF | Corps Level Computer Generated Force |
| CLCM | Cannon Launched Counter Measures |
| CLCSE | Center for Life Cycle Software Engineering |
| CLD | Compact Laser Designator |
| CLEA | Civilian Law Enforcement Agency |
| CLEA | Combined Logistics Excellence Awards |
| CLEAR | Clearing Lanes Effectively And Rapidly (minesweeping) |
| CLEOC | Consolidated Law Enforcement Operations Center |
| CLER | Classification and Labelling of Explosives Regulations |
| C-Level | Category Level |
| CLF | Cantilever Lifting Frame |
| CLF | Combat Logistics Force |
| CLF | Commander, Landing Force |
| CLFC | Closed Loop Fire Control |
| CLG | Combat Logistics Group |
| CLGP | Cannon Launched Guided Projectile (COPPERHEAD) |