Sacculina, Genus
Sacculinidae, Familia
Saduria, Genus
Sarsicytheridea, Genus
Scalpellidae, Familia
Scalpellum, Genus
Schistomysis, Genus
Sclerochilus, Genus
Scopelocheirus, Genus
Scutocyamus, Genus
Semibalanus, Genus
Siphonoecetes, Genus
Siriella, Genus
Socarnes, Genus
Sphaeroma, Genus
Sphaeromatidae, Familia
Spinifer Kröyer, 1842 (homonym)
– synonym of Phoxocephalus, Genus
Spirontocaris, Genus
Stegocephalidae, Familia
Stegocephaloides, Genus
Stenopleustes, Genus
Stenothoe, Genus
Stenothoidae, Familia
Stenula, Genus
Stomatopoda, Ordo
Stylocheiron, Genus
Sunamphitoe, Genus
Sylon, Genus
Sylonidae, Familia
Synchelidium, Genus
Synopiidae, Familia