| V2G | Vehicle To Grid |
| V2I | Vehicle To Infrastructure |
| V2V | Vehicle To Vehicle |
| V2X | Vehicle To Everything |
| VA | Vinyl Acetate |
| VABP | ventilator-associated bacterial pneumonia |
| VAE | Vinyl Acetate Ethylene |
| VAlc. | Vinyl Alcohol |
| VAM | Vinyl Acetate Monomer |
| VAMS | Volumetrically Absorptive MicroSampling |
| VAP | Ventilator Associated Pneumonia |
| VAP | Vascular Adhesion Protein |
| VAPAHCS | Veterans Affairs Palo Alto Health Care System |
| VARTM | Vacuum Assisted Resin Transfer Molding |
| VAST | Versatile Automated Sample Transport (combinatorial NMR analysis) |
| VAT | Visceral Adipose Tissue |
| VBR | Vertebral Body Replacement |
| VC | Vinyl Chloride |
| VCA | Viral Capsid Antigens |
| VCAM | Vascular Cell Adhesion Molecule |
| VCD | Vibrational Circular Dichroism |
| VCI | Vapor Corrosion Inhibitor |
| VCJ | Vision-Controlled Jetting |
| VCM | Vinyl Chloride Monomer |
| VCM | Visual Cycle Modulator |
| VD | Vitamin D |
| VDA | Vascular Disrupting Agents |
| VDC | Viscosity / Density Constant |
| VDF | VinyliDene Fluoride |
| VDOT | 3,4-Vinylene Di Oxy Thiophene |
| VDS | Vibration Damping Steel |
| VE | Vinyl Ester |
| VEGF | Vascular Endothelial Growth Factor |
| VEGF-TKI | VEGF-Tyrosine Kinase Inhibitor |
| VEGFR | vascular endothelial growth factor receptor |
| VentMI | Ventilate Multiple Individuals |
| VEP | Visual Evoked Potential |
| VFFS | Vertical Form Fill Seal (packaging) |
| VH | Variable Heavy (protein chain) |
| VHD | valvular heart disease |
| VHL | Von Hippel Lindau (tumor suppressor gene) |
| VIG | Vaccinia Immune Globulin |
| VIM | Vacuum Induction Melting |
| VIP | Vasoactive Intestinal Peptide |
| VIPS | Volumetric Integral Phase-shift Spectroscopy |
| VKA | Vitamin K Antagonist |
| VKC | Vernal Kerato Conjunctivitis |
| VL | Variable Light (protein chain) |
| VL | Viral Load |
| VL | Vinyl Laurate |
| VLA | Very Late Antigen |
| VLC | Visible Light Cure |
| VLCFA | Very Long Chain Fatty Acid |
| VLDG | Very Low Dose Glucagon |
| VLDL | Very Low Density Lipoprotein |
| VLP | Virus Like Particle |
| VLSI | Very Large Scale Integration |
| VMAT | Volumetric Modulated Arc Therapy (Oncology) |
| VMAT | Vesicular Mono Amine Transporter (Neurology/Psychiatry) |
| VMS | VasoMotor Symptoms |
| VNS | Vagus Nerve Stimulation |
| VNTR | Variable Number of Tandem Repeats |
| VOC | Volatile Organic Compounds |
| VOD | veno-occlusive disease |
| VOTMS | Vinyl Oxy Tri Methyl Silane |
| VP | Vinyl Pyridine |
| VPAC | Vasoactive Intestinal Peptide/Pituitary Adenylyl Cyclase Activating Peptide Receptor-1 |
| VPC | Vinyl Phenyl Carbonate |
| VPC | Vapor Phase Corrosion |
| VPI | Vapor Phase corrosion Inhibitor |
| VR | Ventricle Right |
| VRC | Vascular Repair Cells |
| VRE | Vancomycin Resistant Enterococci |
| VREF | Vancomycin Resistant Enterococcus Faecium |
| VRG | Vertical Replacement Gate (transistor) |
| VRLA | Valve Regulated Lead Acid |
| VRT | Variable Residence Time |
| VSF | Virus Simulation Facility |
| VSV | Vesicular Stomatitis Virus |
| VTA | Ventral Tegmental Area |
| VTE | Venous Thrombo Embolism |
| VV | Vinyl Versatate |
| VVA | vulvar and vaginal atrophy. |
| VVC | VulvoVaginal Candidiasis |
| VWD | Von Willebrand Disease |
| VWF | Von Willebrand Factor. (Factor VIII) |
| VZV | Varicella Zoster Virus |