A solo death/black metal project launched in 2023 by veteran musician Fábio Nosferatus Lima, who has been active in the Brazilian underground since 1994. Drawing on horror-film obsessions, his releases — including Chainsaw Massacre, Deus-Verme, The Exorcist, and Conjured — explore a grimy intersection of death metal brutality and black metal atmosphere rooted in exploitation-cinema imagery.

Operating under the abbreviation N.Ó.I.A. — a Portuguese slang pun meaning dopey or paranoid — this São Paulo grindcore outfit delivered blasts of politically charged noise across a run of splits and compilations between 2012 and 2016. Their discography includes the debut Gritos de Horror, a split with Instinct of Suicide, an Agathocles cover, and the Correntes da Tirania split with Smelling Fétid Corpse.

A heavy metal act with a penchant for horror and classic metal aesthetics, Nostalgica released three records in 2021 — the self-titled Nostalgica, Melissa, and Horrorplane — establishing a sound that draws as much from B-movie atmosphere as it does from traditional heavy metal riffing. Tracks like "Battles to Win" and "Horrorplane" reflect the band's B-grade horror fixations filtered through straightforward, hook-driven metal.

Nostalgie Depression was a one-person depressive black metal and ambient project from Santiago, active from 2012 until splitting up, created by the sole member Adramelejch. The project released several albums through Ukrainian label Depressive Illusions Records, including Del Cerro a la Luz Resplandeciente bajo el Sol and El Canto de las Aves en la Niebla in 2014 and Psychedelic Eyes in 2015, exploring themes of misanthropy, depression, and melancholy.

Nostos took their name from the ancient Greek concept of the epic hero's return home, and channeled that inward journey through bleak, atmospheric black metal. The project released the EP Misfortune and the single Altar before going silent, leaving behind a small but focused body of work built around introspection and desolation.

Noth is a solo project by the multi-instrumentalist known as Niili, who started in raw black metal territory with vegetarian and environmental themes before pivoting toward heavier sludge, doom, and noise textures. The 2022 EP Noth Is Nothing showcases that transition, trading primitive aggression for suffocating weight and an obsession with nothingness and psychological collapse.

Nottus plays traditional heavy metal with all lyrics written in Portuguese, grounding the band firmly in a local identity unusual for the genre. Vocalist and main composer Cristiano Mendes steers the songwriting toward historical and religious subjects — the 2014 EP A Marcha Negra includes the track A Lança de Longino, which draws on the legend of the spear said to have pierced Christ at the crucifixion.

NouseyesuoN fuses heavy metal with orchestral classical arrangements, structuring their 2020 album Death Is Nothing To Us as a suite of nine movements — each track numbered as an Opus — covering ground from Epicurean philosophy to Mayan mythology and medieval death imagery. The band's lyrical scope is unusually literary, drawing on poetry, nihilism, and esoteric history to give the music an almost academic density.

Nova Darkness is a Chilean melodic death metal band that released their debut album Of Doom and Grief in November 2019, a ten-track record incorporating neo-classical and symphonic elements alongside death metal riffing. The band followed it with Nigredo Tenebrae in January 2024, continuing to develop a sound influenced by the melodic death metal tradition of the 1990s.