| Abbreviation | Definition |
|---|---|
| CLA | Clean, Lube, and Adjust |
| CLA | Cleaning, Lubrication, and Adjustment |
| CLA | Coarse Level Adjustment |
| CLAM | Closed-Loop Automated Manufacture |
| CLASP | Collaborative Labelling And Standards Program |
| CLC | Chesapeake Light Craft |
| CLC | Continuous Linked Commodity |
| CLK | Caps Lock Key |
| CLP | Cleaner, Lubricant, Protectant |
| CLRSS | Closed-Loop Rotary Steerable System |
| CLS | Canadian Lumber Standards |
| CLT | Cross-Laminated Timber |
| CLUT | Colour Look Up Table |
| CLYW | Caribou Lodge Yoyo Works |
| CM | Ceramic Modified |
| CM | Certification Mark |
| CM | Correlated Metal |
| CM | Courcheval Manta |
| CMAB | Curb Mounted Aluminum Base |
| CMAD | Common Mode Absorbing Device |