Thrash/death metal and grindcore act from Belpasso near Catania, formed in 2021 and delivering extreme aggression from the slopes of Mount Etna. Their triple-genre fusion channels the volcanic intensity of their Sicilian setting.

Rotorhammer is a groove/thrash metal band from Leipzig in Saxony, Germany, formed in 2017. The band channels heavy grooves and thrash riffing from one of eastern Germany's most culturally dynamic cities.

Rotovathor is a Viking/black/thrash metal band from Siegbach in Hesse, Germany, active since 2009. The band fuses Norse-themed Viking metal with black and thrash metal from the Lahn-Dill hills of central Germany.

Death/thrash metal band from Rupea/Brașov in Transylvania, Romania, active since 2018. Their approach merges death metal with thrash from the heart of vampire country.

Rotten Perish is a heavy/thrash metal band from Richterswil on Lake Zürich, Switzerland, formed in 2009. The band delivers aggressive thrash-inflected heavy metal from the Zürich area underground scene.

Rotten Reality is an experimental groove/thrash metal project from Saint Petersburg, Russia, formed in 2024. The band blends aggressive riffing with groove-laden structures and experimental elements, delivering a chaotic and volatile take on modern extreme metal.

Rotten Tomatos is a thrash metal band from the Espoo/Helsinki area of Finland, active since 2010. The band delivers energetic thrash from the Helsinki metropolitan area.

Rough Justice was a crossover thrash/hardcore band from Aalst, Belgium, whose 1988 demo tape 'Pink Elephants in Yellow Trees' captured the raw energy of the Belgian underground HC/thrash scene of that decade. The band featured Koen Taeleman on vocals, Piet Marcoen on guitar, Manu Cambier on bass, and Joost Van Den Broeck on drums.

Ferrara crossover/thrash metal act formed in 2019, fusing aggressive riffing with hardcore punk energy from Emilia-Romagna. Their pit-ready approach channels the confrontational spirit of the crossover tradition.