Diminium is a groove and progressive metal band from Kyiv, Ukraine, formed in 2023. The project blends groove riffing with progressive complexity.

Dimorfia is a progressive and symphonic power metal band from Thessaloniki, Greece, formed in 2017. Their debut album Utopia (2017) features nine tracks of orchestral power metal with character-driven narratives and thematic storytelling across nearly forty-five minutes.

Dimaeon plays progressive death metal from Leeuwarden in Friesland, active since 2010 and navigating complex, boundary-pushing compositions with technical precision. Their decade-plus tenure in the Frisian underground speaks to a deep commitment to progressive extremity.

Dionysos is a progressive metal band from Dormagen, Germany, formed in 2019. They explore complex, Dionysian musical landscapes through progressive metal.

Disaffected started as a death/thrash metal act in Oeiras before evolving toward progressive death metal, adding complexity and nuance to their already aggressive foundation. This stylistic deepening reflects a band willing to grow beyond their early brutality into more challenging compositional territory.

Disassembled plays progressive death metal from Lisbon, active since 2008 and taking apart conventional song structures to rebuild them in more complex, unexpected configurations. Their mechanical name suits a methodical approach to deconstructing and reassembling extreme metal.

Discernment is a progressive metal band from Somma Lombardo, Italy, formed in 2024. The project explores complex and dynamic progressive metal compositions with an ambitious Italian sensibility.

Discors is a death and progressive metal band from Moscow, Russia, formed in 2012. The project blends death metal with progressive complexity.

Disentropy is a progressive metal band from Degerfors, Sweden, formed in 2022. The project explores complex progressive metal.