Ghost Opera is the eighth studio album by American power metal band Kamelot. It was released in 2007 by SPV GmbH/Steamhammer Records, on June 1 in Germany and followed by releases on June 4 in Europe and June 5 in the United States. It is the first studio album by Kamelot to feature keyboardist Oliver Palotai, and the last with bassist Glenn Barry. The album spawned four music videos for the songs "Ghost Opera", "The Human Stain", "Rule the World" and "Love You to Death".

Kamelot is an American power metal band from Tampa, Florida, formed by Thomas Youngblood in 1987. The Norwegian vocalist Roy Khan joined for the album Siége Perilous, and shared songwriting credit with Youngblood until his departure in April 2011. On June 22, 2012, Youngblood announced on their website that their new vocalist would be the Swedish singer Tommy Karevik, who was first featured on Kamelot's album Silverthorn as the main vocalist, co-songwriter, and lyricist.