Bells of Doom is a compilation album of SwedishSymphonic metal band Therion, released by the official fan club (now called Therion Society) in 2001. The album was originally available for Therion Society members only but is now available to anyone in Therion's Official online store. It contains rare tracks from early recordings of the band. The first two tracks come from the very first of the band's live shows when they were still called Blitzkrieg, the remaining from various Therion demos and unreleased recordings. The album is limited in numbers and will not be reprinted once it has sold out.