Headspace may refer to:
Science and technology Headspace gas chromatography, a technique in analytical chemistry Headspace or ullage, the unfilled space in a container Headspace technology, the gaseous constituents of a closed space above liquids or solid emitting and vapors measured using headspace gas chromatography Headspace (firearms), a chamber measurement Headroom (photographic framing), a concept of aesthetic composition in imaging Headspace (firearms) the distance measured from a closed chamber's breech face to the chamber feature that limits the insertion depth of a cartridge placed in it.
Companies and organizations Headspace (company), an online healthcare company specializing in meditation Headspace (organisation), an Australian non-profit organization for youth mental health
Culture Headspace (slang), a term for mental world shared between multiple identities within the multiplicity (also called plurality) subculture
Arts and entertainment Music Headspace (band), a British progressive metal band formed in 2006 Headspace (Ashton Nyte album), 2005 Headspace (Issues album), 2016 Headspace (Pulse Ultra album), 2002 "Headspace", a song by Lewis Capaldi from Divinely Uninspired to a Hellish Extent, 2019 "Headspace", a song by Sharon Van Etten from We've Been Going About This All Wrong, 2022 "Headspace", a song by Velvet Revolver from Contraband, 2004
Other media Headspace (film), a 2005 horror film "Headspace" (Ted Lasso), a 2021 TV episode Head-Space, a 2016 graphic novel