| Sarcology |
Study of fleshy parts of the body |
| Satanology |
Study of the devil |
| Scatology |
Study of excrement or obscene literature |
| Schematonics |
Art of using gesture to express tones |
| Sciagraphy |
Art of shading |
| Scripophily |
Collection of bond and share certificates |
| Sedimentology |
Study of sediment |
| Seismology |
Study of earthquakes |
| Selenodesy |
Study of the shape and features of the moon |
| Selenology |
Study of the moon |
| Semantics |
Study of meaning |
| Semantology |
Science of meanings of words |
| Semasiology |
Study of meaning; semantics |
| Semiology |
Study of signs and signals |
| Semiotics |
Study of signs and symbols |
| Serology |
Study of serums |
| Sexology |
Study of sexual behaviour |
| Siderography |
Art of engraving on steel |
| Sigillography |
Study of seals |
| Significs |
Science of meaning |
| Silvics |
Study of tree's life |
| Sindonology |
Study of the shroud of turin |
| Sinology |
Study of china |
| Sitology |
Dietetics |
| Sociobiology |
Study of biological basis of human behaviour |
| Sociology |
Study of society |
| Somatology |
Science of the properties of matter |
| Sophiology |
Science of ideas |
| Soteriology |
Study of theological salvation |
| Spectrology |
Study of ghosts |
| Spectroscopy |
Study of spectra |
| Speleology |
Study and exploration of caves |
| Spermology |
Study of seeds |
| Sphagnology |
Study of peat moss |
| Sphragistics |
Study of seals and signets |
| Sphygmology |
Study of the pulse |
| Splanchnology |
Study of the entrails or viscera |
| Spongology |
Study of sponges |
| Stasiology |
Study of political parties |
| Statics |
Study of bodies and forces in equilibrium |
| Stemmatology |
Study of relationships between texts |
| Stoichiology |
Science of elements of animal tissues |
| Stomatology |
Study of the mouth |
| Storiology |
Study of folk tales |
| Stratigraphy |
Study of geological layers or strata |
| Stratography |
Art of leading an army |
| Stylometry |
Studying literature by means of statistical analysis |
| Suicidology |
Study of suicide |
| Symbology |
Study of symbols |
| Symptomatology |
Study of symptoms of illness |
| Synecology |
Study of ecological communities |
| Synectics |
Study of processes of invention |
| Syntax |
Study of sentence structure |
| Syphilology |
Study of syphilis |
| Systematology |
Study of systems |