Death Dimensions is a progressive death metal band from Rivas-Vaciamadrid, Spain, active since 2014. They explore multiple dimensions of death metal through progressive songwriting.

Death Follows is a progressive metal project from Corfu, Greece, formed in 2019 by multi-instrumentalist Ser Don, who handles vocals, guitars, bass, composition, lyrics, and cover art. The 2021 album Glare & Evelyn combines gothic, blackened, and progressive death metal across fifteen tracks inspired by a fictional narrative the artist is developing.

Death Head is a progressive thrash metal band from Portsmouth, England, formed in 2018. They push thrash into progressive territory from the Hampshire coast.

Decathect is a progressive black/death metal band from Stuttgart, Germany, active since 2013. They push extreme metal into cerebral, progressive territory with ambitious compositions.

Decembrance is a progressive metal and gothic rock band from Frankfurt an der Oder, Germany, active since 2005. They merge progressive metal's complexity with the dark atmosphere of gothic rock across two decades of creativity.

Decimals is a progressive metal band from Barcelona, Spain, formed in 2018. They explore complex mathematical precision through progressive metal.

Deconstructing Sequence is a progressive black/death metal band from Taunton, England, active since 2013. They deconstruct extreme metal through progressive ambition from Somerset.

Deep Silence is a progressive metal/rock band from Germany, active since 2016. They craft expansive, thought-provoking compositions that span the progressive metal and rock spectrum.

Defcon 5 is a progressive thrash metal band from Wuppertal, Germany, active since 2013. They push thrash metal's boundaries with progressive complexity and technical ambition.