John McRis is a Greek guitarist and producer from Athens, known for his work with comedy rock band Anorimoi who released five albums including two through Warner Music Records. His instrumental solo debut Ark (2021) features eight progressive metal tracks recorded at Hell's Kitchen Studio with guest keyboardist Bob Katsionis and released via Symmetric Records.

John Nash is an Italian metal musician whose heavy, technically proficient compositions showcase instrumental precision and melodic depth. His work channels the diverse influences of the Italian metal scene through carefully crafted, guitar-driven heavy music.

John Steel is a heavy metal band from Bulgaria that channels classic metal energy through a modern Eastern European lens. The project delivers hard-hitting riffs and powerful performances rooted in the traditions of the Bulgarian metal underground.

John the Baptist is a doom metal band from Jyvaskyla, Finland, whose slow-burning, heavy compositions channel the crushing weight of traditional doom. Their releases including A Glimpse of Valor showcase the Finnish penchant for heavy, soul-crushing riff worship.

Johnny Mental is a metal and thrash metal musician from Wales active since at least 2003, with releases spanning over a decade of heavy compositions. His albums including The Fire In Which The Heart Resides (2004) and Pining For The Fjords deliver aggressive Welsh metal with a distinctly independent spirit.

Johnny Riffs is a Sweden-based metal musician who creates backing tracks spanning hard rock, metal, thrash, death, power ballads, stoner rock, and glam. His sixteen-album catalogue serves as a resource for guitarists looking to jam and shred solos, with new tracks added monthly.

Johnny the Boy formed in the United Kingdom in 2014, built around a creative core of vocalist Belinda Kordic and guitarist Justin Greaves, both key members of Crippled Black Phoenix, alongside bassist Matt Crawford. Signed to Season of Mist, the band blends blackened sludge, doom, and hard rock into a sound described as ice-cold black metal meeting excoriating sludge metal.

Joint Depression is an alternative metal band from Oulu, Finland, blending oppressive heaviness with bluesy melodies and dynamic songwriting. Their album Projection (2022), released through Luminol Records, features Maria Liikanen's powerful vocals over a foundation of heavy, melancholic guitar work recorded at White Rock Dog Studios.

Jointhugger is a Norwegian heavy psychedelic doom rock band active since 2012, self-described as hashtronauts of the heavy playing cosmic, psychosonic doom rock straight from the fjords. Their trilogy of albums including Surrounded By Vultures (2021), composed by Nico Munkvold and recorded live at Stone Bone Cross Studio, channels deep fuzz and occult heaviness.