Isafjord is a black metal project from Melhus, Norway, active since 2022 and forging dark, aggressive extremity within the Norway black metal scene. The project channels the unrelenting intensity of the genre.

Isaiah is a death metal with black/sludge metal influences act from Northampton, United Kingdom, active since 2019 and merging the atmospheric darkness of black metal with death metal's crushing brutality. The project delivers fierce extremity at the crossroads of both genres.

Isarn is a black metal band from North Rhine-Westphalia, Germany, formed in 2023, forging atmospheric black metal from Germany's most populous state. The band channels the genre's cold intensity through compositions rooted in the German underground tradition.

Isathurs is a black metal project from Deventer, Netherlands, active since 2024 and forging dark, aggressive extremity within the Netherlands black metal scene. The project channels the unrelenting intensity of the genre.

Isaz is a German black metal project active since 2014, named after the Elder Futhark rune meaning "ice." The band channels the frozen, primordial symbolism of their namesake rune into over a decade of atmospheric black metal.

Iscariot is a melodic black metal act from Nijmegen, Netherlands, active since 2025 and channeling melodic sensibilities through the atmospheric intensity of black metal. The project delivers sweeping, emotionally resonant extreme metal.

Isceald is a atmospheric black metal/dark ambient act from Warsaw, Poland, active since 2023 and crafting immersive, expansive compositions that push beyond conventional black metal boundaries. The project blends atmospheric textures with the intensity of extreme metal.

Iscuron is a symphonic/atmospheric/medieval black metal project from Northern Italy, Italy, active since 2021 and forging dark, aggressive extremity within the Italy black metal scene. The project channels the unrelenting intensity of the genre.

Isebel is a melodic black metal act from Sweden, active since 2019 and channeling melodic sensibilities through the atmospheric intensity of black metal. The project delivers sweeping, emotionally resonant extreme metal.