Ego
Ego or EGO may refer to:

Social sciences
Ego (Freudian), one of the three constructs in Sigmund Freud's structural model of the psyche
Egoism, an ethical theory that treats self-interest as the foundation of morality
Egotism, the drive to maintain and enhance favorable views of oneself
Egocentrism, the inability to differentiate between self and other
Self-concept, a collection of beliefs about oneself that embodies the answer to "Who am I?"

Arts and media
Music
Egó, an Icelandic band
Ego (Oomph! album), 2001
Ego (Tony Williams Lifetime album), 1971
E.G.O. (album), a 2018 album by Lucie Silvas
"Ego" (Big Bang song), 2012
"Ego" (Beyoncé song), 2009
"Ego" (Ella Eyre song), 2017
"Ego" (Elton John song), 1978
"Ego" (Kim Wilde song), 1982
"Ego" (Lali Espósito song), 2016
"Ego" (The Saturdays song), 2010
"Ego" (Spunge song), 2000
"Ego" (Willy William song), 2015
"Ego", a 2021 song by Anson Lo
"Outro: Ego", a 2020 song by BTS
EGO, a record label founded by Joe Haider

Other uses in arts and media
Ego (2013 film), an Indian (Tamil) film
Ego (2018 film), a Telugu language film
Ego (2021 film), a Spanish film
Ego (game engine), a video game engine developed by Codemasters
Ego (magazine), a defunct online magazine for Indian Americans
Ego (TV channel), an Israeli digital cable television channel
Ego the Living Planet, a character in the Marvel Comics universe
European History Online, an academic website

People
Ego Lemos (born 1972), East Timorese musician
Ego Leonard, Dutch visual artist
Ego Nwodim (born 1988), American actress and comedian
Ego Plum (born 1975), American film composer
Paul Ego (born 1966), New Zealand comedian
Prosper Ego (1927–2015), Dutch political activist
Yuna Ego (born 2000), Japanese idol and member of music group SKE48

Science and technology
Ego (fish), a genus of gobiid fishes
Ego (game engine), a video game engine developed by Codemasters
EGO sensor, an oxygen sensor in gasoline engines
EGOT (gene), previously known as EGO
European Gravitational Observatory, or EGO

Other uses
Belgorod International Airport, in Russia
Energica Ego, a motorcycle