Rentgen is a heavy metal band from Týn nad Vltavou in southern Bohemia, Czech Republic, formed in 2020. The band takes its name from the Czech word for X-ray, delivering traditional heavy metal from the Vltava river valley.

Reo is a heavy/thrash metal band from Santurtzi in the Basque province of Bizkaia, Spain, active since 2009. The band delivers aggressive heavy-thrash from the industrial Basque port town on the Nervión estuary.

Repression is a heavy/power metal band from Dinslaken in North Rhine-Westphalia, Germany, formed in 2012. The band delivers classic heavy and power metal from the Lower Rhine region.

Requiem Eternam is a self-described 'philosophical metal' project from Sion, Switzerland, active since 2010 and evolving from ambient Celtic and medieval roots into heavier territory incorporating metal elements. With six albums to their name including Instrumetal I and Emergent, the project explores existential themes through an eclectic, boundary-pushing approach.

Restful is a heavy metal and hard rock band from Grenoble in the French Alps, active since 2012. The band delivers classic-leaning metal from the Alpine city in southeastern France.

Heavy/thrash metal band from Medway, England, active since 2018. Their approach combines classic heavy metal with thrash aggression from the Kent towns.

Ukrainian heavy metal act formed in 2022, delivering classic riff-driven energy with traditional metal power. Their approach channels the timeless foundations of heavy metal.

Resurrección is a melodic heavy metal band from Burgos in Castile and León, Spain, formed in 2017. Named 'Resurrection' in Spanish, the band delivers melodic heavy metal from the historic Gothic cathedral city of northern Spain.

Reternity is a melodic heavy metal band from Heilbronn in Baden-Württemberg, Germany, formed in 2022. The band delivers hook-laden traditional heavy metal from the Neckar valley wine region.