A vapor is a substance in the gas phase below its critical temperature.

Vapor, vapors, vapour or vapours may also refer to:

Art, entertainment, and media Film Vapor (film), a Canadian comedy-drama short film Vapors (film), a 1965 short film

Music "Vapor" (song), a 2015 song by 5 Seconds of Summer Vapours (album), a 2009 album by Islands The Vapors, an English new-wave/power pop band "Vapours", a single by Nathaniel Willemse "The Vapours", a song on rock concept album The Philosophy of Velocity by Brazil "Vapors", a song by Biz Markie

Other art, entertainment, and media Vapor (G.I. Joe), a fictional villain in the G.I. Joe universe, member of Cobra Vapor (Marvel Comics), a villainess Vapor (novel), by Amanda Filipacchi "Vapors" (seaQuest DSV), a second-season episode of seaQuest DSV

Other uses VAPOR (software), a visualization tool used in geosciences Vapor (web framework), an open-source web framework written in Swift Vapour Col, South Shetland Islands, Antarctica Vapours (mental condition), an archaic term for certain mental and/or physical illnesses Composition of electronic cigarette aerosol

See also Vaper, a user of electronic cigarettes Vapor Trail (disambiguation) Vaporware, a term in the computer industry Vaporwave, a musical genre and aesthetic