• An alternative name for the Monad, The Absolute, The Source of Reality, "God" (not in a monotheistic sense) in Greek Philosophy, in particular in Neoplatonism, The Prime Principle in Gnosticism, The All in Hermeticism.
• The concept of a soulmate.

Books, magazines and comics

• The One (magazine), a video game magazine from the United Kingdom
• The One (comic book), a limited series comic book distributed by Epic Comics in 1983
• The One (manhua), a manhua by Nicky Lee

Music

Albums

• The One (Chubb Rock album), a 1991 album by Chubb Rock
• The One (Elton John album), a 1992 album by Elton John
• The One (Frankie J album), a 2004 album by Frankie J
• The One (Shinichi Osawa album), a 2007 album by Shinichi Osawa
• The One (Jane Zhang album), a 2006 album by Jane Zhang
• The One (EP), a 2004 EP by Annihilator

Songs

• "The One" (Millionaires song), a 2008 single
• "The One" (Gary Allan song), a 2002 single
• "The One" (Tracy Bonham song) a 1996 single from the album The Burdens of Being Upright
• "The One" (Backstreet Boys song), a 2000 single
• "The One" (Mariah Carey song), a 2002 single
• "The One" (Foo Fighters song), a 2002 single
• "The One" (Elton John song), a 1992 single
• "The One" (Kylie Minogue song), a 2008 single
• "The One" (Prince song), a 1998 track by Prince from the album Newpower Soul
• "The One" (Shakira song), a 2003 single
• "The One" (White Zombie song), a 1996 single

Other

• Religious belief in the coming of the savior, i.e., Jesus Christ (Christians), The Messiah (Judaism), The Mahdi (Shīʿī Islam), Maitreya (Buddism)

The One (DVD), a recording of Michael Jackson's 2004 CBS special

• Another name for the downbeat in music theory

Film and television

• The One (film), a 2001 film starring Jet Li
• The One (2003 film), a 2003 TV film
• "The One" (Ghost Whisperer Episode)
• The One (TV program), an Australian TV series
• The One: Making a Music Star, a reality series

See also

• List of fictional characters named "The One"