Ironopolis is a blackened death metal/grindcore act from Middlesbrough, United Kingdom, active since 2014 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.

Ironoya is a deathcore/groove metal band from Geneva, Switzerland, active since 2012, fusing bone-crushing breakdowns with rhythmic groove metal weight. The band delivers punishing modern extreme metal from the heart of francophone Switzerland.

Irony of Fate is a melodic death/groove metal band from Bern, Switzerland, formed in 2018, blending Scandinavian-influenced melodic death metal with the chugging heaviness of groove metal. The band marries hooky melodies with crushing rhythmic weight from the Swiss capital.

Death metal band from Albacete in Castilla-La Mancha, active since 2005 — two decades of death metal from the central Spanish plateau.

Black/death metal band from Valladolid in Castile and León, formed in 2022. Their sound merges black and death metal from the historic Castilian capital.

Irreversible Mechanism is a Minsk-based progressive/technical metal project featuring Vladislav Nekrash on guitar and bass, Andrew Parmon on guitar, and Dan Presland on drums. Originally rooted in progressive death metal before incorporating stoner rock elements, the band is known for highly technical, instrumental-leaning compositions produced, mixed, and mastered entirely by Nekrash.

Irreversum is a progressive thrash/death metal band from Kraków, Poland, active since 2012 and merging death metal's heaviness with thrash's relentless velocity. The project delivers aggressive crossover fury.

Death metal band with groove influences from Lappeenranta in southeastern Finland, active since 2017. Their sound adds rhythmic groove elements to death metal from the South Karelian lakeland.

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.