| Abbreviation | Definition |
|---|---|
| CU | Component Units |
| CU | Concerned Unit |
| CU | CUbic capacity |
| CUA | Commercial Use Authorization |
| CUA | Control Unit Assembly |
| CUBIC | Common User Baseline for the Intelligence Community |
| CUC | Common User Contract |
| CUCV | Commercial Utility Cargo Vehicle |
| CUE | Component Uncertainty Evaluation |
| CUFS | Common User Facsimile System |
| CUL | Common User Language |
| CUL | Common-User Logistics |
| CULT | Common-User Land Transportation |
| CUMC | Classified US Military Communications |
| CUNT | Class Under Normal Training |
| CUP | Common User Products (or Processor) |
| CURF | Confidentialised Unit Record File |
| CURV | Cable-controlled Undersea Recovery Vehicle |
| CUS | Common User System |
| CUTE | Combat Unit Tactical Engine |