E
- Thomas Edison — Edison effect, Edison Records, Edisonian approach, Edison, Georgia, Edison, New Jersey, Edisonade
- Prince Edward Augustus, Duke of Kent and Strathearn (younger brother of King George IV and King William IV), commander of British forces in Halifax — Prince Edward Island
- Gustave Eiffel — Eiffel Tower, designer
- Albert Einstein — Einstein refrigerator, einsteinium — chemical element, Bose-Einstein statistics, Bose-Einstein condensates
- Queen Elizabeth I of England, the "Virgin Queen" and "Wingina", a Native American regional king — Virginia, West Virginia, Elizabethan sonnet, Elizabethan era, Elizabethan theatre, Elizabethan architecture, Elizabethan government
- Saint Elmo — St. Elmo's fire
- Arpad Elo — Elo rating system
- Loránd Eötvös — eotvos, gravitational gradient
- Sir Anthony Epstein and Yvonne Barr — Epstein-Barr virus
- Lars Magnus Ericsson — Ericsson
- Agner Krarup Erlang (1878–1929) — in telecommunications and queueing theory, the Erlang (unit) and Erlang distribution are widely used; in computing, the concurrent-processing Erlang (programming language)
- Leonhard Euler — Euler's formula, Eulerian path, Euler equations; see also: List of topics named after Leonhard Euler
- Europa — Europe
- Bartolomeo Eustachi — Eustachian tube
- William Davies Evans — Evans Gambit
- Sir George Everest* — Mount Everest
- Ewale a Mbedi — Duala people, Douala (from a variant of his name, Dwala)
- Edward Eyre - Lake Eyre, Eyre Peninsula, Eyre Highway, Eyre Creek, Mount Eyre, Eyre Mountains (New Zealand)
Read more about this topic: List Of Eponyms (A-K)