| Abbreviations | Meaning |
 | SABV | Saboya Virus |
 | SADV | Simian Adenovirus |
 | SAFV | Saint-Floris Virus |
 | SAHV | St Abb's Head Virus |
 | SAKV | Sakhalin Virus |
 | SALV | Salehebad Virus |
 | SANV | Sango Virus |
 | SAPV | Sapphire Virus |
 | SARV | Santa Rosa Virus |
 | SATV | Sathuperi Virus |
 | SAV | San Angelo Virus; Sequential Atrioventricular [pacing]; Sikhote-Alyn Virus |
 | SBV | Singular Binocular Vision; Soilborne Virus |
 | SCAV | Sunday Canyon Virus |
 | SCETY1V | Saccharomyces Cerevisiae Ty1 Virus |
 | SCETY2V | Saccharomyces Cerevisiae Ty2 Virus |
 | SCETY3V | Saccharomyces Cerevisiae Ty3 Virus |
 | SCETY4V | Saccharomyces Cerevisiae Ty4 Virus |
 | SCETY5V | Saccharomyces Cerevisiae Ty5 Virus |
 | SCNV-20S | Saccharomyces Cerevisiae Narnavirus 20S |
 | SCNV-23S | Saccharomyces Cerevisiae Narnavirus 23S |
 | SCV | Saccharomyces Cerevisiae Virus |
 | SCV-BC | Saccharomyces Cerevisiae Virus L-BC |
 | SCV-L-A | Saccharomyces Cerevisiae Virus L-A |
 | SDAV | Sialodacryoadenitis Virus |
 | SDFV | Syr-Daria Valley Virus |
 | SDNV | Serra Do Navio Virus |
 | SEBOV | Sudan Ebola Virus |
 | SELV | Seletar Virus |
 | SEOV | Seoul Virus |
 | SEPV | Sepik Virus |
 | SEV | Sendai Virus |
 | SEV 1-18, 125, 203 | Simian Enterovirus 1-18, 125, 203 |
 | SF | Simian Foam-virus |
 | SFFV | Spleen Focus-forming Virus |
 | SFNV | Sabin Virus; Sandfly Fever Naples Virus |
 | SFSV | Sandfly Fever Sicilian Virus |
 | SFV | Semliki Forest Virus |
 | SFV | Shipping Fever Virus |
 | SFV | Shope Fibroma Virus |
 | SFV | Simian Foamy Virus |
 | SFV | Squirrel Fibroma Virus |
 | SFV | Swine Fever Virus |
 | SFV 1, 3 | Simian Foamy Virus 1, 3 |
 | SGV | Salivary Gland Virus; Selective Gastric Vagotomy; Short Gastric Vessel |
 | SHAV | Shamonda Virus |
 | SHFV | Simian Hemorrhagic Fever Virus |
 | SHIV | Shiant Islands Virus |
 | SHOV | Shokwe Virus |
 | SHUV | Shuni Virus |
 | SHV | Simian Herpes Virus; Southampton Virus |