Jawbreaker is a heavy metal band from the Netherlands whose aggressive, riff-driven approach channels the intensity of Dutch extreme music. Their compositions deliver hard-hitting metal that draws on the strong tradition of heavy music in the Low Countries.

JBP is a heavy metal band from El Prat De Llobregat, Spain, whose debut album Piel de Metal (2021) delivers nine tracks of straightforward, riff-driven heavy metal. Their Spanish-language approach to the genre brings a distinct Mediterranean flavor to classic metal songwriting.

JD Miller is a Swedish four-piece hard rock and metal band from Boras, dubbed the heaviest AOR around by Sweden Rock Magazine. Their fourth album Empyrean (2024), released through Mighty Music, features former State Of Drama guitarist Tommy Timonen and blends hard rock, metal, and AOR into a melodically driven heavy sound.

Jeddah is a heavy metal band from the United Kingdom that brings a dark, intense approach to British heavy music. Their aggressive compositions draw on the UK's deep tradition of heavy and extreme metal.

Jeremiah is a heavy metal band from Sweden that delivers powerful, riff-driven compositions rooted in Scandinavian metal traditions. Their approach to the genre channels the energy and technical proficiency that characterizes Sweden's celebrated metal scene.

Jersey is a heavy metal band from Croatia that channels aggressive energy through their compositions. Their approach to metal draws on both Central European and Mediterranean influences, contributing to the growing Croatian heavy music scene.

Jeshaia is a black metal project from Belgium, delivering atmospheric and aggressive extreme metal. The project channels dark sonic landscapes through the lens of Belgian underground black metal traditions.

Jesters is a heavy metal band from France that delivers energetic, riff-driven compositions with a theatrical flair. Their approach to classic heavy metal brings a distinctly French sensibility to the genre's bombastic traditions.

Jezabel is a power metal band from Hungary that delivers epic, anthemic compositions with soaring vocals and driving riffs. Their approach to the genre channels classic power metal energy through Eastern European sensibilities.