| Acronym | Meaning |
| CTPGF | Closed Time Path Green Function (in Many-body Theory) |
| CTPV | Coal Tar Pitch Volatiles |
| CTR | Calcitonin Receptor |
| CTR | Crystal Truncation Rod |
| CTTS | Classical T Tauri Star |
| CTTS | Charge Transfer To Solvent |
| CTZ | Coastal Transition Zone |
| CUM | Cumulative Effects |
| CUP | Conditional Use Permit |
| CURE | Clean Use Of Reactor Energy |
| CUS | Coordinatively Unsaturated Site |
| CUSMAP | Conterminous United States Mineral Assessment Program |
| CUTLASS | Co-operative UK Twin-Located Auroral Sounding System |
| CV | Calibrated Volume |
| CV | Coeff. Of Variation |
| CV | Core-valence Correlation |
| CV | Cyclic Voltammetry |
| CV-AFS | Cold Vapor Atomic Fluorescence Spectrometry |
| CV-MCHF | Core-valence Correlation-multiconfiguration Hartree-Fock |
| CVA | Canonical Variate Analysis |
| CVA | Characteristic Vector Analysis |
| CVA-MO | Core-valence Approxn.-MO (for At. Integral Calcns.) |
| CVAAS | Cold Vapor Atomic Absorption Spectrometry |
| CVAFS | Cold Vapor At. Fluorescence Spectrometry |
| CVB | Canonical Valence Bond |
| CVBM | Conduction-valence-band Model (in Electronic Structure Calcns.) |
| CVC | Chemical Vapor Composites |
| CVD | Cardiovascular Disease |
| CVD | Chemical Vapor Deposition |
| CVF | Cobra Venom Factor |
| CVFEM | Control Volume Finite Element Method |
| CVFF | Consistent Valence Force Field |
| CVG | Chemical Vapor Generation |
| CVG | Cochleovestibular Ganglion |
| CVI | Chemical Vapor Infiltration (impregnation) |
| CVL | Copper Vapor Laser |
| CVM | Cluster Variation Method (in Calcns. On Semiconductors) |
| CVM-CI | Constrained Variational Method-CI |
| CVMO | Cluster Valence Molecular Orbital |
| CVO | Canonical Virtual Orbital |
| CVOC | Chlorinated Volatile Organic Compound |
| CVP | Central Venous Pressure |
| CVP | Colloidal Vibration Potential |
| CVPT | Canonical Van Vleck Perturbation Theory |
| CVS | Cardiovascular Effects |
| CVS | Constant Volume Sampler |
| CVSEH | Correlated Valence Shell Effective Hamiltonian |
| CVT | Canonical Variational Transition-state (theory) |
| CVTST | Canonical Variational Transition-state Theory |
| CW | Continuous Wave |