One is a number.

1, one, or ONE may also refer to:

• 1, a year
• One (pronoun), a pronoun in the English language
• 1 BC, the year before 1 AD
• Hydrogen, with an atomic number of 1
• The month of January

Geography

• Ona, Hordaland (sometimes spelled One) is an island in Øygarden, Norway
• L'One, a river that joins the Pique in Bagnères-de-Luchon, France
• The number of the French department Ain'
• 01, the former dialling code for Greater London (later split into 071 and 081 in 1990, then became 0171 and 0181 in 1995, now 020 since 2000)

Companies

• One (Telekom Slovenija Group), a Macedonian GSM/UMTS mobile operator
• Ubuntu One, an online storage service by Canonical Ltd.
• National Express East Anglia, previously branded as one, a train operating company
• Orange Austria, previously ONE, an Austrian mobile network operator
• One Enterprises, a production company founded by Akir
• One NorthEast, the Regional Development Agency for the North East England region
• One (Australian TV channel), an Australian television channel
• One (Canadian TV channel), a Canadian English-language cable channel
• ONE Television, a former Swedish television channel
• BBC One, a British Broadcasting Corporation television channel
• TV One, the former name of TVNZ 1, a Television New Zealand television channel

Brands

• Elonex ONE, or simply ONE, a subnotebook computer
• HTC One series, a series of Android smartphones produced by Taiwanese smartphone manufacturer HTC
  • HTC One (2013), the HTC flagship phone released in 2013
  • HTC One (2014), the HTC flagship phone released in 2014
• OnePlus One, the first Android smartphone released by Chinese smartphone manufacturer OnePlus
• PSone, a smaller re-branded, original Sony PlayStation console
• Purina ONE, a line of pet food products
• The Red One (camera), the first camera released by the Red Digital Cinema Camera Company
• Xbox One, an eighth generation games console, and the third in the Xbox line, produced by the Microsoft Company

Organizations

• Organisation of National Ex-Servicemen (O.N.E.), an organization of veterans of military service in Ireland
• ONE Campaign, a campaign to fight global AIDS and poverty
• ONE, Inc., a gay rights organization founded in the United States in 1952
• ONE National Gay & Lesbian Archives, the largest LGBT archive in the world and a part of the University of Southern California Libraries
• Office of National Estimates (ONE), a forerunner of the U. S. National Intelligence Council
• One (sixth form college), a college in Ipswich, England

Music

Songs

• "One" (Ami Suzuki song)
• "One" (Bee Gees song)
• "One" (Creed song)
• "One" (Crystal Kay song)
• "One" (Ed Sheeran song)
• "One" (Fat Joe song)
• "One" (Harry Nilsson song), covered by ANBB, Three Dog Night, John Farnham, Aimee Mann, and Filter
• "One" (JayKo song)
• "One" (Metallica song)
• "One" (Sky Ferreira song)
• "One" (Swedish House Mafia song)
• "One" (U2 song)
• "One (Always Hardcore)", by Scooter
• "One (Blake's Got a New Face)", by Vampire Weekend
• "O.N.E.", by Yeasayer
• "One", by Alanis Morissette from Supposed Former Infatuation Junkie
• "One", by Ane Brun from It All Starts with One
• "One", by Epik High from Pieces, Part One
• "One", by Faith Hill from Cry
• "One", by Ghostface Killah from Supreme Clientele
• "One", by Immortal Technique from Revolutionary Vol. 2
• "1", by Joy Zipper
• "One", by Kumi Koda from Grow into One
• "One", by Lady Gaga
• "One!", by Misia from Love Is the Message
• "One", by Parachute Band from Roadmaps and Revelations
• "One", by Rapture Ruckus
• "One", by Rip Slyme from Tokyo Classic
• "One", by Shapeshifter from Soulstice
• "One", by Simple Plan from Still Not Getting Any...
• "One", by Soulfly from 3
• "One", by Sunny Day Real Estate from The Rising Tide
• "One", by TVXQ from Heart, Mind and Soul
• "One", by Zion I from Mind Over Matter
• "One", from the musical A Chorus Line
• "One", from the musical Bare: A Pop Opera

EPs

• One (Alli Rogers EP)
• One (Angela Aki EP)
• One, by The Brian Jonestown Massacre
• One (Charlotte Church EP)
• One (Hillsong United EP)
• One (Ra EP)
• One (Tying Tiffany EP)
• The Beatles (No. 1), by The Beatles, also known as simply No. 1
• One, by Debby and the Never Ending
• #1 (EP), by Suburban Kids with Biblical Names

Albums

• 1 (The Beatles album)
• 1 (The Black Heart Procession album)
• 1 (The Motors album)
• 1 (Pole album)
• 1 (Zara Larsson album)
• #1 (Demy album)
• #1 (Fischerspooner album)
• I (Cursed album)
• One (Angela Aki EP)
• One (Arashi album)
• One (Bee Gees album)
• One (Bob James album)
• One (Bonnie Pink album)
• One, by C418
• One (Crown City Rockers album)
• One (Dirty Vegas album)
• One (Edita Abdieski album)
• One (George Jones and Tammy Wynette album)
• One (Ida Corr album)
• One (Maher Zain album)
• One (Matthew Shipp album)
• One (Me Phi Me album)
• One (Neal Morse album)
• One (NoMeansNo album)
• One by Planetshakers
• One (Sister2Sister album)
• One (Tesseract album)
• One, an alternate title for the self-titled Three Dog Night
• One (Yuval Ron album)
• (ONe), by The Panic Channel
• One (Hellbound), by Demiricous
• One, by Sarah Burgess
• ONE, a Ministry of Sound various artists compilation
• 01 (Son of Dave album)
• '01 (Richard Müller album)
• Ones (Selena album)

Artists

• One (band), from Cyprus
• #1, the pseudonym of American drummer Joey Jordison, when performing with the band Slipknot
• One (manga artist), pseudonym of a Japanese manga artist

Other

• One (opera), a chamber opera by Michel van der Aa

Entertainment

Literature

• One (Conrad Williams novel), the 2010 British Fantasy Award winner for Best Novel
• One (David Karp novel)
• One: A Novel, a 1988 novel by Richard Bach
• One (Crossan novel), the 2016 Carnegie Medal winning work by Sarah Crossan

Film

• 1: Nenokkadine, a 2014 Telugu film starring Mahesh Babu
• 1 (2013 film), a 2013 film about Formula One
• 1 (2009 film), a 2009 Hungarian film by Pater Sparrow
• ONE: The Movie, a documentary about the meaning of life
• 1, a character in the film 9

Television

• "One" (Law & Order: Criminal Intent), an episode of Law & Order: Criminal Intent
• "One" (Star Trek: Voyager), an episode of Star Trek: Voyager
• One, a Borg drone from the Star Trek: Voyager episode "Drone"

Video games

• One (video game), a video game released in 1997 for the Sony PlayStation
• ONE (N-Gage game), a video game for N-Gage and N-Gage 2.0
• One: Kagayaku Kisetsu e, a Japanese video game by Tactics

Sport

• Formula One
• Armand Oné (born 1983), a French footballer
• Pro Wrestling ZERO1-MAX, a wrestling promotion formerly known as Pro Wrestling ZERO-ONE
• BAR 01, a Formula One chassi
• Division 1 (disambiguation)

Transportation

• List of highways numbered 1
• List of public transport routes numbered 1
• BMW 1 Series

Other uses

• One (Enneagram), a personality type
• One (magazine), a homophile magazine published by One, Inc.
• Kolmogorov's zero-one law, a law of probability theory
• A call sign suffix of any official vehicle used for the transportation of the President of the United States, for example Air Force One
• No. 1, a slang term for urination