- Quinology : Study of quinine
- Radiology : The study of X-Rays and their medical application
- Reflexology : The study of reflexes
- Rheology : The science of deformation and flow of matter
- Rheumatology : The study of rheumatism
- Rhinology : The study of nose
- Sarcology : The study of fleshy parts of the body
- Sedimentology : The study of sediment
- Seismology : The study of earthquakes
- Selenology : The study of moon
- Serology : The study of serum
- Silvics : The study of tree’s life
- Sociobiology : The study of biological basis of human behaviour
- Sociology : The study of society
- Somatology : The study of physiological and anatomical characteristics of the human body
- Stomatology : The study of mouth & its diseases
- Stratigraphy : The study of geological layers or strata
- Stylometry : The study of linguistic style in literature by means of statistical analysis
- Symptomatology : The study of symptoms of illness
- Synecology : The study of ecological communities & their environments
- Synectics : The study of processes of invention
- Systematology : The study of systems or their formation
- Taxidermy : The art of curing and stuffing animals
- Tectonics : The science of structure of objects, buildings and landforms
- Teuthology : The study cephalopods
- Thalassography : The science of the sea
- Theriatrics : The study of veterinary medicine
- Thermmatology : The science of breeding domestic animals and plants
- Thermodynamics : The study of relation of heat to motion
- Thermology : The study of heat
- Therology : The study of wild mammals
- Threpsology : The science of nutrition
- Tidology : The study of tides
- Tocology : The science of obstetrics
- Topology : The study of geometric surface
- Toreutics : The study of artistic work in metal
- Toxicology : The study of poisons
- Traumatology : The study of wounds and their effects
- Trichology : The study of hair and its disorders
- Typhology : The study of causes & treatment of blindness
- Ufology : The study of unidentified flying objects
- Uranology : The study of celestial bodies & universe
- Urology : The study of urinary system & its disorder
- Venereology : The study of venereal disease
- Vermeology : The study of worms
- Vinology : The scientific study of wines and wine making
- Virology : The study of viruses
- Vitrics : The study of glassy material
- Volcanology : The study of volcanoes
- Xylography : The art of engraving on wood
- Xylology : The study of wood
- Zenography : The study of planet Jupiter
- Zoiatrics : The study of veterinary surgery
- Zooarchaeology : The study of animal remains at archaeological sites
- Zoochemistry : The study of chemistry of animals
- Zoogeography : The study of geo-distribution of animals
- Zoogeology : The study of fossil animal remains
- Zoology : The study of animals
- Zoonomy : The study of animal physiology
- Zoopathology : The study of animal carcasses
- Zoophysics : The study of physics of animal bodies
- Zoophysiology : The study of physiology of animals
- Zoophytology : The study of plant like animals
- Zoosemiotics : The study of animals communication
- Zootaxy : The science of classifying animals
