Kyiv groove/thrash/death metal act formed in 2019, merging multiple aggressive styles into a versatile sonic assault from Ukraine's capital. Their multi-genre approach channels the physical impact of all three traditions.

Zaporizhia thrash metal act formed in 2012, delivering aggressive speed and precision from southern Ukraine. Their sustained output speaks to the enduring vitality of thrash in the Ukrainian underground.

Reacción Corrupta is a thrash metal and crossover band from Girona in Catalonia, Spain, active since 1990. Over three decades of thrash metal make them one of the veteran acts of the Catalan extreme metal scene.

Reactorblast is a thrash metal band from Langenfeld in North Rhine-Westphalia, Germany, formed in 2021. The band channels high-energy thrash from the Rhine-Ruhr metropolitan region.

Reactory is a Berlin-based thrash metal band formed in 2010, featuring Hänz Hazard on vocals, Jerry Reactor on guitar, Ulli Master on bass, and Caue dos Santos on drums. Their five releases including Collapse To Come, High On Radiation, and Killed By Thrash establish them as one of the German capital's most prolific thrash acts.

Reagan Ralph is a progressive heavy/thrash metal band from Plymouth in Devon, southwest England, formed in 2021. The band delivers progressive metal from the naval port city on the English Channel.

Reaktion is a thrash metal band from Barcelona, Spain, active since 2011. The band delivers aggressive thrash from the Catalan capital, part of Barcelona's strong thrash metal tradition.

Thrash/progressive metal band from Chania, Crete, with roots dating to 2000. Over two decades of technically ambitious thrash-progressive metal from the historic Cretan harbor city.

Thrash/groove metal band from Novi Sad, Serbia, formed in 2021. Their approach combines thrash speed with groove heaviness from Serbia's second city.