The Florentine Camerata is a technical death/groove metal band from the Plymouth/Torbay area of Devon, active since 2014. Named after the Renaissance-era Florentine intellectual circle, they bring an unusually cerebral approach to technical and groove-oriented death metal.

The HAARP Machine is a technical death/progressive metal/metalcore band from London, formed in 2020. Their name references conspiracy theories about weather modification technology, and their music delivers similarly otherworldly technical precision and progressive complexity.

The Hanged from Vaiano in Tuscany deliver death metal named after the tarot card of sacrifice and suspension since 2019. Their Tuscan hills setting channels the inverted wisdom of the hanged man through brutal compositions.

The Harbinger is a melodic death/doom metal band from Kouvola, Finland, formed in 2019. They blend melodic death metal's harmonies with doom's crushing sorrow.

The Haven Theory is a metalcore/melodic death metal band from Cologne/Düren, Germany, active since 2009. They blend metalcore's breakdowns with melodic death metal's harmonic richness.

The Hell We Created is a death metal band from Löhne, Germany, formed in 2018. They deliver crushing death metal with thematic depth.

The Hidden Project from Elche in Alicante province deliver death metal from the palm-grove city of southeastern Spain since 2012. Their secretive name frames an underground approach to extreme metal from the Valencian coast.

The Hollowmen from Santa Cruz de Tenerife are among the oldest active extreme metal acts in the Canary Islands, fusing death metal with crust punk and hardcore since 1985. Four decades of output from this Atlantic island city have produced a uniquely isolated take on crossover extremity.

The Hypothesis is a melodic death metal band from Kouvola, Finland, formed in 2016. They play melodic death metal from southeastern Finland.