Jaded Heart is a melodic metal and hard rock band from Germany with a career spanning multiple decades of the European melodic metal scene. Known for their polished songwriting and soaring vocal performances, they have built a loyal following through consistent albums blending power metal melodies with hard rock accessibility.

Jaded Star is a symphonic/progressive metal band from Athens, Greece, founded by Maxi Nil, formerly of Visions of Atlantis. Their albums Memories From The Future (2015), mixed by Fredrik Nordstrom at Fredman Studios, and Realign (2020) have earned them European tour slots alongside Epica, Moonspell, and Delain.

Jaggernaut is a heavy metal band from Sweden whose dark, aggressive compositions channel the intensity of the Swedish extreme metal tradition. Their extensive discography including Immortal and Distorted Heavens demonstrates a prolific approach to heavy, uncompromising metal.

Jaguar is a NWOBHM-era heavy metal band from the United Kingdom, part of the iconic New Wave of British Heavy Metal movement. Their classic approach to heavy metal helped define the sound of British metal in its formative years and continues to influence the genre.

Jailbreaker is a heavy metal band from Belgium that draws on classic speed and traditional metal influences. Their energetic approach to the genre keeps the spirit of old-school European heavy metal alive in the Belgian underground scene.

Jaldaboath is a folk metal band from England signed to Napalm Records, known for their intoxicating mix of metal, Middle Ages themes, and Monty Python-esque humor. Their debut The Rise of the Heraldic Beasts (2010) features galloping drums, catchy melodies, and sarcastic lyrics delivered through Sir Jaldaboath's distinctive clean vocals in a genre they've dubbed Templar metal.

Jamie Slays is a metalcore artist from Bristol, UK, drawing inspiration from Metallica, Sylosis, and the Black Dahlia Murder. His track Thanks For The Heartache (2025) features guest performances from Josh Baines of Malevolence and Sam Kubrick of Shields, blending melodic chaos with raw emotional intensity.

Jan Magne Garte is a Norwegian multi-instrumentalist solo project from More og Romsdal, creating hard rock and power metal influenced by 1980s heavy metal. He performs all vocals and instruments himself with programmed drums, delivering albums including Fight For Life and Ghost Stories that channel classic metal energy through a distinctly Norwegian lens.

Janissary is a heavy metal band from Serbia named after the elite Ottoman military corps, delivering aggressive compositions with historical and martial themes. Their approach to metal draws on Eastern European traditions to create a distinctive, powerful sound within the Balkan metal scene.