An illusion is a distortion of the senses.

Illusion or Illusions may also refer to:

• Illusion (1929 film), an American film starring Buddy Rogers
• Illusion (1967 film), a Croatian film
• Illusion (2004 film), a film starring Kirk Douglas
• Illusions (1930 film), a French silent comedy film
• Illusions (1982 film), a film by Julie Dash

• Illusion (series), a video game series by Sega
• Illusions (video game), a 1984 ColecoVision game
• Pinball Illusions, a 1995 computer game

• The Illusion (novel), a 1999 Animorphs novel by K. A. Applegate
• Illusions (Bach novel), a 1977 novel by Richard Bach
• Illusions (Pike novel), a 2011 novel by Aprilynne Pike
• Illusions, a 1987 novel by Charlotte Vale Allen
• Illusions, a 1997 novel by Janet Dailey
• Illusions, a 2000 novel by Jean Saunders

• Illusion (band), British progressive rock band formed in 1977
• The Illusion (band), American psychedelic hard rock band formed in 1969

• Illusion (Renaissance album), 1971
• Illusion (Shahin Najafi album), 2009
• Illusion (Spoken album), 2013
• Illusion (Poor Moon EP), 2012
• Illusion (ZE:A EP), 2013
• Illusions (Arthur Blythe album), 1980, and the title track
• Illusions (Eliane Elias album), 1986
• Illusions (George Duke album), 1995
• Illusions (Michale Graves album), 2007
• Illusions (Sadus album), 1988
• Illusions (Thomas Bergersen album), 2011
• The Illusion (album), by The Illusion, 1969
• Illusion, an unreleased album by Faith Hill
• Illusion, a 2016 album by Gaby Moreno
• Illusions, a 1992 album by Ute Lemper
• Illusions, a 1995 album by Crematory

• "Illusion" (song), by Dua Lipa, 2024
• "Illusion" (Aespa song), 2022
• "Illusions" (song), by Cypress Hill, 1996
• "Illusion", a song by Amorphis from the 2013 album Circle
• "Illusion", a song by Ateez from the 2019 EP Treasure EP.3: One to All
• "Illusion", a song by Benassi Bros from the 2004 album Pumphonia
• "Illusion", a song by Destiny's Child from the 1998 album Destiny's Child
• "Illusion", a 2018 song by GreatGuys
• "Illusion", a song by Krassimir Avramov, Bulgaria's entry in the 2009 Eurovision Song Contest
• "Illusion", a song by Kylie Minogue from the 2010 album Aphrodite
• "Illusion", a 1968 song by The Motions
• "Illusion", a song by One Direction from the 2014 album Four
• "Illusion", a song by Ross Lynch from the 2012 soundtrack album Austin & Ally
• "Illusion", a song by Trail of Tears from the 1998 album Disclosure in Red
• "Illusion", a song by VNV Nation from the 2007 album Judgement
• "Illusion", a song by Zedd from the 2015 album by True Colors
• "Illusions", a song by As I Lay Dying from the 2005 album Shadows Are Security
• "Illusions", a song by Brymo from the 2022 album Theta
• "Illusions", a song by The Haunted from the 2017 album Strength in Numbers
• "Illusions", a 1966 song by The Human Instinct
• "Illusions", a song by Kid Cudi from the 2016 album Passion, Pain & Demon Slayin'
• "Illusions", a 1976 song by Lone Star
• "Illusions", a song by Sundara Karma from the 2019 album Ulfilas' Alphabet
• "Illusions", a song by Theatre of Tragedy from the 2009 album Forever Is the World

• The Illusion (play), a 2003 play by Tony Kushner
• Illusion (musical), a 1986 Australian stage musical
• "Illusion", an episode of the Mission: Impossible 1966 TV series
• Illusion (comics), a fictional character in Marvel comics

• Aesthetic illusion, a type of mental absorption
• Illusion (company), a Japanese 3D graphics company
• Illusion (keelboat), a type of boat
• Illusion (turn), a rotation of the body in dance and gymnastics
• Illusion, a subgenre of magic, a performing art
• Maya (religion) (literally 'illusion' or 'magic'), with multiple meanings in Indian philosophies
• Vekoma Illusion, a type of roller coaster

• All pages with titles beginning with Illusion
• All pages with titles containing Illusion
• Grand Illusion (disambiguation)
• Ilusión (disambiguation)
• Illusionism (disambiguation)