Apocrifo was a thrash metal band from Fortaleza, Brazil, whose lyrical focus centered on the great fallacies and contradictions of modern society. The band released the two-track demo "No Alvo" in 2014, delivering tightly wound, palm-muted thrash in the classic Brazilian tradition before splitting up.

Apocryph was a short-lived Rio de Janeiro project operating in the rare crossroads of epic, atmospheric, and avant-garde metal. Formed in 2020 and having split up not long after, the band left a minimal footprint but occupied an ambitious niche within Brazil's underground extreme metal scene.

Apofenia is an old-school death/thrash metal band from the city of San Luis, Argentina, formed in late 2015 and playing their first show in January 2016. The band released their debut demo "Peste" in July 2016, a five-track assault featuring tracks like "Descuartizado" and "Muerte" rooted in brutal, no-frills extreme metal. Driven largely by siblings Anabelle Escudero on drums and Gisselle Escudero on guitar and vocals, Apofenia became one of the more notable all-female extreme metal acts in Argentina's interior provinces.

Apofis is a black metal band from Quito, Ecuador, formed in 2021. Drawing on themes of darkness, rituals, mysticism, and misanthropy, the band has self-released a string of EPs including Rituals in the Dark, Reborn in the Black Sky, and The Mountain Mist, as well as contributing to a 2023 split release. They remain an active independent act in Ecuador's underground black metal scene.

Apoka is a black metal band from São Paulo, Brazil, active since 2020 within the city's dense underground extreme metal community. Their sound draws on the rawer, uncompromising traditions of the genre that have long flourished in southeastern Brazil.

Apokalyptic Raids is a black/death/thrash metal band from Rio de Janeiro, originally formed in 1998 as Apocalyptic Raids — a name drawn directly from a Hellhammer EP — before adopting the current spelling in 2001. Driven by guitarist and vocalist Leon "Necromaniac" Manssur, they have released a string of albums and splits since their debut "Only Death Is Real" (2001), channeling the proto-black metal ferocity of Hellhammer, Bathory, and Vulcano while collaborating with acts like Whipstriker and Atomic Roar.

Apokalyptisk Framtid is a black metal/noise/punk project from Catanduva, São Paulo state, formed in 2023. Their approach fuses the ugliness of raw black metal with punk and noise abrasion, and they have already appeared on split releases within the Brazilian underground, including the 2026 "Friends of Evil" split alongside Mortuário A.D., Mourning Souls, and Pugnax.

Apokatastase is a thrash/death metal band from São Paulo, Brazil, active since 2022. Taking their name from the theological concept of universal restoration, the band operates within the city's well-established extreme metal underground, delivering aggressive, riff-driven material at the intersection of thrash and death metal.

Apokrisis is a progressive death/thrash metal band from São Paulo, Brazil, whose name derives from the ancient Greek word for "revelation." Formed around 2016 after years of earlier development, they released the debut album "Misanthropy" in 2020 — produced by Michel Villares and co-produced by Ricky Franco — drawing on influences from Slayer, Death, Pantera, and Dream Theater while exploring psychological and nihilistic lyrical themes.