Dianne plays symphonic metal from North Brabant, formed in 2023 and delivering orchestral grandeur through sweeping compositions and powerful vocals. Their personal-name title lends an intimate, human dimension to the genre's typically epic scale.

Diezektor is a symphonic black metal project from Huddersfield, England, formed in 2017, crafting what they call epic apocalyptic music that spans extreme metal and electronic remixes. Releases like the Sleeper Simulant EP and tracks such as The Nihilist and Ruination showcase their genre-blending approach to sinister heavy metal.

Different World is a progressive and symphonic metal band from Rybnik, Poland, formed in 2020. The project delivers ambitious progressive metal enriched with symphonic grandeur.

Dim Crimson plays symphonic metal from Enschede in Overijssel, formed in 2021 and painting their compositions in muted shades of red — the color of blood viewed through fog. Their atmospheric name captures the hazy, darkly romantic quality of their orchestral metal.

Dimlight is a symphonic death and gothic metal band from Athens, Greece, formed in 2012, known for their combination of aggressive guitars, sharp female vocals, and brutal male growls. Their discography includes Psychosynthesis, The Lost Chapters, Realm of Tragedy, Kingdom of Horrors, and A Symphony of Horrors, established through active worldwide live performances.

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.

Diskelion is a symphonic metal project centered on composer Tom Harris and vocalist Gaby Koss (ex-Haggard), featuring guest musicians from Equilibrium, Xandria, Diabulus in Musica, and Blackmore's Night. Their 2014 album Remember Sorrow offers ten tracks of orchestral, female-fronted symphonic metal in the tradition of Nightwish and Epica.

Diskordia is a symphonic doom metal band from Newcastle upon Tyne, England, formed in 2026. The band merge the grandeur of symphonic metal arrangements with the crushing heaviness of doom metal.

Dismal Euphony is a pioneering Norwegian symphonic/melodic black metal act from Stavanger, active since 1996 and among the early architects of the symphonic black metal sound. Their later evolution toward gothic metal expanded their palette while maintaining the dark melodicism that defined their influential early work.