Walrider is a thrash/crossover band from Formosa, Goiás, Brazil, active since 2015. The band is part of Brazil's interior underground scene and has released the album Death, Beer and Mosh, a title that announces their no-frills approach to pit-ready crossover thrash.

Warbiff is a thrash metal trio from Fortaleza, Ceará, Brazil, built around guitarist and vocalist Daniel Biff alongside bassist Pedro Torres and drummer Rômulo Shaw. The band released the eight-track mini-CD Fresh Meat in 2006 and placed second in the 2010 Wacken Metal Battle selection in São Paulo, earning a reputation across Brazil for their fast and unrelenting sound.

Warbound is a thrash metal band from the ABC Paulista region of São Paulo, Brazil, whose lineup includes vocalist and bassist Hélio Patrizzi, drummer Enrico Ozio, and guitarists Jefferson Oliveira and Heloisa Bordini. The band debuted with the full-length Behind the Unreal in 2019 and followed it with Necrothrash in 2024 on Thrash or Death Records, drawing comparisons to the Teutonic thrash tradition.

Warburst Command is a black/thrash metal band from Mossoró, Rio Grande do Norte, Brazil, formed in 2013 under the pseudonyms Prometheus (guitar/vocals), Chackal (bass), and Witchhunter (drums). The band released the three-track Barbarian, Conqueror EP in 2014 on CDr, delivering a raw and aggressive blend of black and thrash metal from Brazil's northeastern underground.

Warfire is a heavy/thrash metal band from Tatuí, São Paulo, Brazil, drawing from classic 1980s metal and the Brazilian heavy metal tradition. The band released the EP It's Time to War and the album Heralds of Eternal Order (2017), the latter issued as a limited CD through Breath of Pestilence.

Wargore is an old-school death/thrash metal band from Cascavel, Paraná, Brazil, formed in 2017 and playing in the tradition of early extreme metal. The band has released two albums — Between Evil and Death (2017) and Cursed Existence (2020) — both independently produced and distributed through their Bandcamp page.

Wargrave is a heavy/thrash metal band from Bahia, Brazil, formed in 2016 with lyrical themes centred on war and armageddon. The band has self-released several recordings including Suffering the Void (2015), Zone 51 (2016), and Flames of War (2017), operating as an independent act on their Bandcamp page.

Warmachine is a thrash metal band from Carlos Barbosa, Rio Grande do Sul, rooted in the aggressive, mid-1980s Brazilian thrash tradition with lyrical themes centering on war, politics, and contemporary reality. The project shares members with other Rio Grande do Sul extreme metal acts, including connections to the black metal band Patria through the vocalist known as Triumphsword. The band released a self-titled demo that drew comparisons to classic thrash acts and established their uncompromising old-school approach.

Warrior Sword is a thrash metal band from Floridablanca, Colombia, tracing their roots to 2007 when they formed under the name Warrior Soul before rebranding in 2019 to establish a stronger identity. The band has shared stages with international acts including Inquisition and Enforcer, and completed tours through Mexico, Colombia, and Ecuador. They released "Warrior of Death" and "Through My Blood" in 2023.