- Epidemiology: The branch of medicine dealing with epidemic diseases.
- Eremology: It is the study of deserts.
- Ergonomics: It is the study of people at work.
- Epistemology: Study of grounds of knowledge.
- Ethnology: It is the study of cultures.
- Ethology: It is the study of animal behavior.
- Etymology: The study of origin and history of words.
- Euthenics: Science concerned with improving living conditions.
- Exobiology: The study of extraterrestrial life.
- Fluid dynamics: It is the study of flow of fluids.