"The Magician's Birthday" is the fifth studio album by the English rock band Uriah Heep, released in November 1972. It was released by Bronze Records in the UK and Mercury Records in the US. The album's concept was loosely based on a short story written by the band's keyboardist Ken Hensley during June and July 1972.
The original vinyl release featured a gatefold sleeve, with cover art designed by Roger Dean. The inner fold of the sleeve included pictures of the band, and the album itself was housed in a liner with the lyrics printed on it.
The single "Sweet Lorraine" / "Blind Eye" reached No. 91 on the US Hot 100 chart, while the single "Spider Woman" reached No. 14 in Germany. The Magician's Birthday was certified gold by the RIAA on January 22, 1973.
The album was remastered and reissued by Castle Communications in 1996, with two bonus tracks, and again in 2003 as an expanded deluxe edition. In 2017, Sanctuary Records released a two-disc version of the album.