Houses of the Holy is the fifth studio album by the English rock band Led Zeppelin, released by Atlantic Records on 28 March 1973. The album title is a dedication by the band to their fans who appeared at venues they dubbed "Houses of the Holy". It was the second Led Zeppelin album to not officially be titled after the band. It was also the first of the band's albums to be composed of completely original material. It represents a musical turning point for Led Zeppelin, as they began to use more layering and production techniques in recording their songs.

The fourth album by the English rock band Led Zeppelin was released on 8 November 1971. No title is printed on the album, so it is generally referred to as Led Zeppelin IV, following the naming standard used by the band's first three studio albums.