In a Glass House is the fifth album by British progressive rock band Gentle Giant, released on 21 September 1973.

The album is a loosely-realized concept project based on the aphorism "Those who live in glass houses shouldn't throw stones".

One of Gentle Giant's most popular albums (although the band themselves were not happy with it at the time, having to work under the pressure of Phil Shulman's departure),[5] it was only available in the United States and Canada as a [6] high priced import until 1992 when a reissued CD was released.

This cleared the way for the first "official" release of the title in the United States on compact disc on the band's own Alucard label.

In a Glass House received a physical release on CD as part of a 40th Anniversary series of reissues this time without any bonus tracks with plans to release vinyl versions of all the band's albums from In a Glass House through Giant for a Day in late 2010.