Insalubre is a black metal project from Peso da Régua, Portugal, active since 2024 and forging dark, aggressive extremity within the Portugal black metal scene. The project channels the unrelenting intensity of the genre.

Insan is a progressive black metal project from Mali Lošinj, Croatia, active since 2017 and forging dark, aggressive extremity within the Croatia black metal scene. The project channels the unrelenting intensity of the genre.

Black metal band from Toulouse in southwestern France, active since 2008 — over 15 years of black metal from the Occitan capital.

Black metal band from Albacete in Spain's Castilla-La Mancha region, active since 2015. Their sound channels raw black metal from the central Iberian plateau.

Insanir is a two-piece black metal/blackened death metal project from Burgas, Bulgaria, founded in 2022, with Latin-titled compositions reflecting anti-religious and philosophical themes. Their 2023 debut Sanctus Insaniam delivers eight tracks of blistering extremity across blackened death metal territory.

Insanis is a black/death metal act from Astrakhan, Russia, active since 2015 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.

Insanity Cult is a black metal project from Athens, Greece, active since 2014 and forging dark, aggressive extremity within the Greece black metal scene. The project channels the unrelenting intensity of the genre.

Insanus Infernus are a black metal band from the United Kingdom, founded in 2013. Their 2021 album The Beginning of the End delivers eight tracks of dark, aggressive black metal.

Black metal band from Madrid, Spain active since 2015. Their ouroboros-referencing name adds alchemical symbolism to their black metal from the Spanish capital.