Ad Majorem Sathanas Gloriam is the seventh studio album by Norwegian black metal band Gorgoroth. It was released in Europe on 19 June 2006 by Regain Records and in the US on 25 July 2006 by Candlelight Records. This was the only Gorgoroth album on which all of the lyrics and music were written by Gaahl and King ov Hell, and was the last to feature both members. It also marked the return of drummer Frost and was the last Gorgoroth album that he appeared on. It was nominated for Norway's 2006 Spellemann award in the "Metal" category. It is the first Gorgoroth album with no Norwegian lyrics.
In November 2007, Ad Majorem Sathanas Gloriam was reissued with a slightly different cover and a DVD containing the "Carving a Giant" music video and another video documenting how the album was recorded.