Luciferiano is a black metal band from Joinville, Santa Catarina, Brazil, operating independently with lyrical themes centered on anti-Christianity. The band remains active in the Joinville underground metal scene, performing at events such as the Espíritos Amaldiçoados black metal showcase in March 2025 alongside Alocer and Zorthis.

Luctus' Hydra is a depressive black metal band from Santiago, Chile, founded in 2002 by multi-instrumentalist and vocalist Draco. The band has released five studio albums, from their debut Screams and Laments from the Deepest of the Soul (2009) through Crónicas de una Eterna Agonía (2020), charting a course from harsh black metal to more melancholic and introspective territory.

Lunar Aeon is a black metal band from Teresina, Piauí, Brazil, whose lineup includes members Hades (vocals/guitar), Blackwolf (guitar), and Tenebrous (drums). The band released the EP Veritas Lúcifer in 2019, a six-track recording centered on Satanic and occult themes, recorded and mixed at Caverna Studio by Cláudio Renato.

Lusferus is a black metal band from Ribeirão Preto, São Paulo, Brazil, active since the mid-2000s and currently signed to Eternal Hatred Records. Their 2013 album Black Seeds ov Obscure Arts, written and recorded between March and October 2012, draws on Satanic and occult themes and showcases the band's dense, atmospheric approach to the genre.

Lutemkrat is a black metal project from Curitiba, Paraná, Brazil, founded by the sole member Wolf Lutemkrat in 2002 and first releasing music in 2003 with the EP Never Surrender. The project draws heavily from the second wave of black metal and has built an extensive discography spanning multiple full-lengths including The Last Survivor (2007) and Circumscribed in a World of Senses (2016), with lyrical themes revolving around war, battle, honour, and philosophical darkness.

Luvart is a black metal band from Juiz de Fora, Minas Gerais, Brazil, originally active in 1993–1995 before reforming in 2009 and continuing to release material through the 2020s. Their 2023 album Until the Void, released by the French label Drakkar Productions, carries particular weight as it was completed amid the death of bassist Necromayhem during the recording sessions, making it a tribute to a fallen member and one of the band's darkest records.

Lux Inferium is a black metal project from Chavantes, São Paulo, Brazil, conceived by the musician known as Funestus and rooted in industrial black metal influences ranging from Limbonic Art and Mysticum to the Brazilian extreme metal tradition. The project's early recordings, including the Black Souls Procession demo (2006), later served as source material for Funestus's subsequent band Sadomystic, with re-recorded versions appearing on that group's later releases.

Lycanthrope is a black/heavy metal band from Melipilla, in Chile's Santiago Metropolitan Region, with occult themes running through their work. They released a rehearsal demo early in their existence and have been documented on the Encyclopaedia Metallum as part of the Chilean underground metal scene.

Maerebat is a Buenos Aires black metal act featuring Lord Abductum on music and Satani Lamentatio on lyrics, with drums handled by Favio Guzman. The band released their debut four-track recording "Amos del Caos" in April 2024, having tracked it the previous year before editing and releasing it independently.