聖飢魔Ⅱ (also written as Seikima-Ⅱ in romaji) is a Japanese heavy metal band from Tokyo, formed by Damian Hamada in 1982.

According to the mythology created by the band, Seikima-Ⅱ are a group of "akuma" (demon race), from the futuristic hyper-evolved dimension "makai", that are preaching a religion, in order to propagate Satan, through the use of heavy metal music. Each member is a demon of a different hierarchical class, with His Excellency Demon Kogure being leader of the "akuma" and His Majesty Damian Hamada being the "Crown Prince of Hell".

In accordance to the prophecy and after completing their world conquest, the band disbanded at the end of the century on December 31, 1999 at 23:59:59.

However, the band has had two separate limited reunions since their disbandment. One in 2005, celebrating their 20th anniversary, and another in 2010, celebrating their 25th anniversary and the release of their album Akuma Nativity "Songs of the Sword", along with their first ever world tour.
As a part of the North American leg of their 2010 world tour, Seikima-II headlined A-Kon 21, in Dallas, Texas.
They also made a appearance at Japan Expo 2010 in Paris, France.