Omega (é or ÃÂ) is the last letter of the Greek alphabet. Omega may also refer to:
Arts, entertainment and media
Fictional entities
- Omega (Doctor Who)
- Omega, a humanised Dalek from The Evil of the Daleks
- Omega, a Maximum Ride character
- Omega, the fictional government agency in the film True Lies
- Omega, in the Mega Man Zero series
- E-123 Omega, a Sonic the Hedgehog character
- Omega, or Genra, a Dead or Alive character
- Omega 13, a time manipulation device in the 1999 science fiction comedy film Galaxy Quest
- Omega Ranger, a Power Rangers S.P.D. character
- Omega Rugal, a The King of Fighters character
- The Omegas, in the 2006 film X-Men: The Last Stand
- Omega, one of the main characters in the 2021 animated series Star Wars: The Bad Batch
- Omega OS, a fictional operating system in the 2018 game PC Building Simulator
- The Omega (Ninjago), a character in Ninjago
- Omega Flowey, a villain in the game Undertale
- Omega, a character of the "omega" secondary sex in the speculative erotic fiction subgenre Omegaverse
Film and television
Literature
Music
Albums
- Omega (Asia album), 2010
- Omega (Epica album), 2021
- Omega (Jelena KarleuÃ
¡a album), 2023
- ', by Periphery, 2015, and a song on that album
- Omega, by Hound Dog, 2005
- Omega, by Azaghal, 2008
- Omega, by Enrique Morente, 1995
- Omega, by Immanuel Wilkins, 2020
Songs
- "Omega" (song), by RosalÃÂa featuring Ralphie Choo, 2024
- "é", by BT from _, 2003
- "Omega", by Bruce Dickinson from Accident of Birth, 1997
- "Omega", Crystal Lake from True North, 2016
- "Omega", Rebecca St. James from Pray, 1998
- "Omega", by SZA from Z, 2014
Other uses in arts, entertainment and media
Businesses and organisations
- OMEGA (counterterrorism unit), in Latvia
- Omega Aerial Refueling Services
- Omega Engineering, an American instrumentation company
- Omega Institute for Holistic Studies, in Rhinebeck, New York, U.S.
- Omega Pharma, a Belgian pharmaceutical company
- Omega SA, a Swiss luxury watchmaker
- Omega Special Task Force, in Georgia
- Joint Task Force OMEGA, of the Colombian military
- Omega Training Group, providing support for defense-oriented programs
- Omega Trust, a fraudulent American investment scheme
- Omega (prison gang), Singapore prison gang
People
Places
- Omega, California, U.S.
- Omega Hydraulic Diggings, historical gold mining site
- Omega, Georgia, U.S.
- Omega, Indiana, U.S.
- Omega, Oklahoma, U.S.
- Omega Development Site, in Warrington, Cheshire, England
Science and technology
Astronomy and astrodynamics
Computing
Mathematics
- Chaitin's constant, or halting probability, written as é
- Lambert W function, or omega function
- Omega constant, a specific value derived from the Lambert W function
- Wright omega function
- ÃÂ, the first infinite ordinal number, also understood as the set of all natural numbers
- ÃÂ<sub>1</sub> or é, the smallest uncountable ordinal number
- ÃÂ, é, é<sub>-</sub>, é<sub>+</sub> and é<sub>ñ</sub> in big O notation
- Omega and agemo subgroup, in group theory
- é, an element in a subsumption lattice
- Prime omega function, in number theory
Other uses in science and technology
- OMEGA, an instrument on Mars Express Mars orbiter
- Omega (rocket), a cancelled space launch vehicle
- Omega (navigation system), the first worldwide radio navigation system
- OMEGA laser, at the Laboratory for Laser Energetics, University of Rochester, New York, U.S.
- Angular frequency, ÃÂ, in physics
- Angular velocity, ÃÂ, in physics
- K<sub>a</sub>/K<sub>s</sub> ratio, or ÃÂ, in genetics
- Ohm, symbol é, the unit of electrical resistance
- Omega equation, in meteorology
- Omega loop, a protein motif
- Omega baryon, a sub-atomic particle
- OMEGA process, an industrial chemical process to produce ethylene glycol from ethylene
Transportation
Other uses
See also