EP, ep, or Ep may refer to:
Epistemology ( (listen); from Greek, Modern ἐπιστήμη, epistēmē, meaning 'knowledge', and λόγος, logos, meaning 'logical discourse') is the branch of philosophy concerned with the theory of knowledge.Epistemology is the study of the nature of knowledge, justification, and the rationality of belief.
The Episcopal Church (TEC) is a member church of the worldwide Anglican Communion based in the United States with dioceses elsewhere.
Epilepsy is a group of neurological disorders characterized by epileptic seizures. Epileptic seizures are episodes that can vary from brief and nearly undetectable periods to long periods of vigorous shaking.
The Epic of Gilgamesh () is an epic poem from ancient Mesopotamia that is often regarded as the earliest surviving great work of literature.
Epic Games, Inc. (formerly Potomac Computer Systems and later Epic MegaGames, Inc.) is an American video game and software development company based in Cary, North Carolina.
Epigenetics is the study of heritable phenotype changes that do not involve alterations in the DNA sequence.
The Epstein–Barr virus (EBV), formally called Human gammaherpesvirus 4, is one of eight known human herpesvirus types in the herpes family, and is one of the most common viruses in humans.
Ephedrine is a medication and stimulant. It is often used to prevent low blood pressure during spinal anesthesia.
A seizure, technically known as an epileptic seizure, is a period of symptoms due to abnormally excessive or synchronous neuronal activity in the brain.