Arae delivers death metal, groove metal, and melodic death metal from the Loiret department since 2015, creating a multi-faceted extreme sound from the Centre-Val de Loire region. Their Latin name, meaning "altars," adds a sacrificial dimension to their heavy compositions.

Arandem is a melodic groove, alternative, and heavy metal band from Ditzingen near Stuttgart, Germany, formed in 2026, representing one of the absolute newest acts in the German metal landscape. The band blends groove metal's rhythmic punch with melodic and alternative metal elements.

Arbatax explores progressive and groove metal from Kyiv since 2017. Named after a Sardinian village, their Mediterranean reference adds unexpected Italian island warmth to technically ambitious Ukrainian metal.

Based in Mohelnice, Archeonic were formed by two members of the dissolved technical death metal band Scenery, and debuted with the EP The 16th Dimension before releasing their first full-length Digital Pain in January 2022. The album's nine tracks blend groove, death, and thrash metal influences across roughly 40 minutes, channeling the band's roots in technical extreme metal.

Arcknoid merges groove and heavy metal from the French underground since 2018, their alien-arcade-inspired name adding a retro-futuristic edge. Their rhythmically driven sound bridges the gap between classic heaviness and modern groove.

Argashi delivers groove metal from Borås in Västergötland since 2014. Their enigmatic name drives over a decade of rhythmically heavy compositions from this western Swedish textile-industry city.

Argorok is a melodic death and groove metal band from Dresden, Germany, formed in 2020, who describe their style as German epic death metal, blending folk, groove, and melodic death metal elements with German-language lyrics. Their catalog includes the 2020 album Usurpator, the 2024 album Obscurum, and singles like Asche und Blut and Gotterdammerung that showcase their evolving sound.

Arhaizam blends progressive and groove metal with folk influences from eastern Serbia since 2026. Their name — 'archaism' in Serbian — brings ancient linguistic and cultural elements into a modern progressive metal framework.

Arhat delivers groove metal from Kyiv since 2018. Named after the Buddhist concept of one who has attained nirvana, they bring Eastern philosophical depth to rhythmically heavy compositions from Ukraine.