Latifundio was a heavy metal band from Concordia, Entre Ríos, built around brothers Alejandro Ferrando (vocals) and Pablo Ferrando (drums), joined by guitarist Matías "Bochi" Benítez. The band released two independent albums — "Herejías" (2004) and "Piel de Metal" (2017) — with lyrics addressing social, religious, and political themes.

Letalis are a speed and heavy metal band from Santiago, Chile, formed in 2021 by members including vocalist Jacqueline Jara. Drawing from 1980s speed metal influences, the band released their debut album Bestia Oculta in 2022 and followed it with Verdadero Poder in November 2025, the latter praised for tighter songwriting and a more fully realized sound within the genre.

Letargo was a heavy metal band from Buenos Aires, Argentina, formed in 1999 under the earlier name Xeus, with members including vocalist Jorge Cabrera, guitarists Diego Prado and Gonzalo Anselmi, and drummer Cristian Gagliardo. The band released their studio album "Derribando al enemigo" in 2003 and appeared the same year on "Mátenlos a todos: Tributo argentino a Metallica," a compilation of Argentine bands covering Metallica songs. The group subsequently split up.

Lethal is a thrash/heavy metal band from Florida, Buenos Aires, founded in 1988 by former members of Legión, that quickly became one of Argentina's most recognized metal acts, opening for international headliners including Sepultura, Pantera, and Anthrax. Their debut album "Bienvenidos a mi reino" (1990) featured the track "King of the Ring," voted best Argentine song of the year by readers of Madhouse magazine, and they followed it with notable releases "Maza" (1994) and "Efecto tequila" (1996). After a hiatus, the band reformed and has continued releasing music, including "Inyección Lethal" (2010) and "Somos thrash" (2023).

Levas is a heavy metal band from Buenos Aires, Argentina, listed on Encyclopaedia Metallum and signed to Del Imaginario Discos. The band released the album "Una vuelta más de rosca" in 2011 and also contributed a track to a Hermética tribute compilation ("Del camionero," Dejesú Records, 2002). Their music sits within the traditional Argentine heavy metal scene.

Los Densos are a Buenos Aires heavy metal and hard rock band formed in 2022 who draw on New Wave of British Heavy Metal alongside Lovecraftian occult themes. Their debut release Habitantes de la Oscuridad, a seven-track album, came out on December 15, 2022. The band consists of Ramón 'Serpiente' Gómez on vocals, Nicolás Rivera on guitar, Julián Sirota on bass, and Nacho Roldán on drums.

Louder than Hell is a traditional heavy metal band from São Paulo, Brazil, founded in 2021 by Rock'n Rafa (also of Metaltex) and guitarist Fabio "Grey Wolf" Paulinelli with the stated aim of keeping true heavy metal alive. The band released their debut full-length True Metal till the End in 2021, followed by Possessed by Steel. Their sound draws firmly on classic NWOBHM and US power metal influences.

Lugubra is a heavy metal band from Bahia, Brazil, formed by vocalist Leonardo Leão, guitarist Rafael Syade, and bassist Marcos Cazé following the dissolution of Drearylands, one of northeast Brazil's most prominent metal acts from 1999 to 2022. The band released their debut album Flores e Pedras in January 2024, blending classic heavy metal with doom, death, and progressive rock influences and Portuguese-language lyrics. They headlined the Palco do Rock festival in Salvador, the largest rock and metal event in northeastern Brazil, at their debut album launch.

Lykanthropia is a traditional heavy metal band from São Gonçalo, Rio de Janeiro, Brazil, whose themes center on lycanthropy, werewolves, and medieval battles. The band is listed on Encyclopaedia Metallum with the album "Werwolf" among their releases, operating as an independent act.