Headspace

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