| 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 |
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