| Abbreviations | Meaning |
 | PUUV | Puumala Virus |
 | PV | Papillomavirus |
 | PV | Paramyxovirus |
 | PV | Parapoxvirus |
 | PV | Parvovirus |
 | PV | Picornavirus |
 | PV | Pneumonia Virus |
 | PV | Poliovirus |
 | PV | Polyoma Virus |
 | PV | Poxvirus |
 | PV-1, 2, 3 | Human Polioviruses 1, 2, 3 |
 | PVB19 | Parvovirus B19 |
 | PVM | Parallel Virtual Machine; Pneumonia Virus Of Mice; Proteins, Vitamins, And Minerals |
 | PVNZ | Parapoxvirus Of Red Deer In New Zealand |
 | PVR | Poliovirus Receptor |
 | PVS | Poliovirus Susceptibility |
 | PVU | Pueblo Viejo Virus |
 | PVX | Potato Virus X |
 | PVY | Potato Virus Y |
 | PY | Phosphopyridoxal; Polyoma [virus]; Pyridine; Pyridoxal |
 | PYV | Polyomavirus, Polyomavirus |
 | QFFV | Queensland Fruit Fly Virus |
 | QPMV | Quail Pea Mosaic Virus |
 | QPV | Quokka Poxvirus |
 | QRFV | Quaranfil Virus |
 | QUPV | Quailpox Virus |
 | QYBV | Qalyub Virus |
 | RAAV | Recombinant Adeno-associated Virus |
 | RADLV | Radiation Leukemia Virus |
 | RAHV | Ranid Herpesvirus |
 | RAS | Retrovirus-associated DNA Sequence |
 | RAV | Rheumatoid Arthritis Virus; Rous-associated Virus |
 | RBCOV | Rabbit Coronavirus |
 | RBUV | Rochambeau Virus |
 | RBV | Ribavirin; Rio Bravo Virus; Right Brachial Vein |
 | RCA | Replication-competent Adenovirus |
 | RCA | Replication-competent Alphavirus |
 | RCOV | Respiratory Coronavirus |
 | RCR | Relative Consumption Rate; Replication-competent Recombinant; Replication-competent Retrovirus; Respiratory Control Ratio |
 | RCV | Rabbit Calicivirus; Recoverin; Red Cell Volume |
 | REDS | Retrovirus Epidemiology Donor Study |
 | REO | Respiratory Enteric Orphan [virus] |
 | REV | Reticuloendotheliosis Virus |
 | REV | Rat Encephalomyelitis Virus; Reticuloendotheliosis Virus |
 | RFV | Right Femoral Vein; Royal Farm Virus |
 | RGHBV | Ross' Goose Hepatitis B Virus |
 | RGV | Rio Grande Virus |
 | RHDV | Rabbit Hemorrhagic Disease Virus |
 | RHDV-AST89 | Rabbit Hemorrhagic Disease Virus AST89 |
 | RHDV-BS89 | Rabbit Hemorrhagic Disease Virus BS89 |