- A Última Theoria (Experimental Metal-Brazil) - Outro nome : AUT
- Aut Mori (Gothic Doom-Russia)
- Aut'chose (Heavy Rock-Canada)
- Auta (Alternative Metal-France)
- Autarcie (Black Metal-France)
- Autaric (Death Black-Canada)
- Autarkh (Thrash Metal-Netherlands)
- Autarkia (Death Thrash-Germany)
- Autarquia (Power Metal-Venezuela)
- Autem Gnosis (Unblack-Chile)
- Autere (Melodic Death-Finland)
- Auternus (Progressive Metal-USA)
- Author (Black Metal-Finland)
- Author And Punisher (Drone-USA) - Outro nome : A&P, Author & Punisher
- Author Of Pain (Black Death-Sweden)
- SoVT (Death Grind-Indonesia) - Outro nome : ex-Authority
- Authority (Death Metal-Indonesia)
- Authority Of Hate (Death Metal-Russia) - Outro nome : AOH
- Authorize (Death Metal-Sweden)
- Authors Of Fate (Thrash Metal-USA)
- Auticada (Heavy Metal-Italy)
- Auticed (Technical Death-Indonesia)
- Autism (USA) (Death Metal-USA)
- Autism (UKR) (Progressive Metal-Ukraine)
- Auto-De-Fe (Gothic Doom-Russia) - Outro nome : Auto De Fe
- Auto Derrota (Death Thrash-United-Kingdom)
- Auto-Mod (Indus Gothic-Japan)
- Autocatalytica (Progressive Metal-USA)
- Autocrat (Doom Metal-USA)
- Autodafé (Grindcore-Canada)
- Autodestruccion (Thrash Black-Chile)
- AutoDestructionNeeded (Speed Metal-Belgium)
- Avtograf (Hard Rock-Russia) - Outro nome : Autograf
- Autograph (Heavy Rock-USA) - Outro nome : Autograph 2.0
- Autokannibalistika (Melodic Death-Germany)
- Autokannon (Thrash Metal-Australia)
- Autokrator (Industrial Death-France)
- Autolatry (Black Metal-USA)
- Autolisis (Black Metal-Spain)
- Autolyse (Industrial Electro-France)
- Autolysis (Grind Death-Australia)
- Autolytic Society (Porno Gore Grind-USA)
- Automag (Heavy Rock-USA)
- Automan.Ca (Heavy Rock-Canada)
- Automatic Animal (Stoner-USA)
- Automatic Fine Tuning (Hard Rock-United-Kingdom)
- Automatic Kane (Metalcore-Germany)
- Automatic Me (Alternative Metal-USA)
- Automation (Death Metal-Australia)
- Automaton (USA) (Power Metal-USA)
- Automaton (GRC) (Stoner Doom-Greece)
- Automb (Black Metal-USA)
- Automuro (Thrash Black-Spain)
- Autonoesis (Death Thrash-Canada)
- Autonome (Progressive Metal-USA) - Outro nome : The Roberto Granados Autonome Project
- Autonomie (Thrash Metal-Norway)
- Autonomist (Progressive Metal-USA)
- Autonomy (USA) (Brutal Death-USA)
- Autonomy (UK) (Nu Metal-United-Kingdom)
- Autophagia (Porno Gore Grind-Greece)
- Autophagy (Death Metal-USA)
- Autopse (Metal-Brazil)
- Autopsia (CHN) (Brutal Death-China)
- Autopsia (ITA) (Death Metal-Italy)
- Autopsia (GER) (Thrash Speed-Germany)
- Autopsia Prematura (Death Metal-Peru)
- Autopsium (Death Thrash-Turkey)
- Autopsy (IDN) (Metal-Indonesia) - Outro nome : Autopsy
- Autopsy (USA) (Death Metal-USA)
- Autopsy Gothic (Black Death-Pakistan)
- Autopsy Malice (Brutal Death-Russia)
- Autopsy Night (Death Metal-Russia)
- Autopsy Terror (Black Death-Mexico)
- Autopsy Torment (Thrash Death-Sweden)
- Autopsya (Thrash Metal-Portugal)
- Autoritär (Crust-Germany)
- Autoscan (Deathcore-Russia)
- Urethral Defecation (Brutal Death-Russia) - Outro nome : Autoscopy
- Cargo (ROU) (Heavy Metal-Romania) - Outro nome : Autostop
- Autotheism (Brutal Death-Italy)
- Autotomy (Brutal Death-Other)
- Autozoofilia Antropofagolagnica (Grindcore-Spain)
- Autres Paysages (Ambiant Black-Russia)
- Autrest (Atmospheric Black-Brazil)
- Auttist (Experimental Metal-Mexico)
- Autumn (TUR) (Death Doom-Turkey)
- Autumn (RUS) (Gothic Doom-Russia)
- Autumn (NL) (Atmospheric Gothic-Netherlands)
- Autumn (HUN) (Death Doom-Hungary)
- Autumn Angels (Gothic Electro-Germany)
- Autumn Aria (Melodic Death-USA)
- Autumn Black (Metalcore-USA)
- Autumn Breath (Gothic Metal-Finland)
- Autumn Bride (Melodic Metal-Austria)
- Autumn Clan (Gothic Metal-Austria)
- Autumn Cold (Gothic Metal-Czechia)
- Autumn Dawn (Death Metal-USA)
- Autumn Dream (Symphonic Metal-Spain)
- Autumn Dweller (Gothic Death-Sweden)
- Autumn Eternal (Black Death-USA)
- Autumn Flowers (Death Doom-Brazil)
- Autumn Grave (Atmospheric Black-USA)
- Autumn Heart (Black Metal-USA)
- Autumn Hour (Progressive Metal-USA)
- Autumn In Disguise (Emo Metal-United-Kingdom) - Outro nome : AID
- Autumn In Frost (Folk black-Germany)
- Autumn In My Room (Black Metal-Canada)
- Autumn Inspiration (Progressive Metal-Norway)
- Autumn Kings (Fusion-Canada) - Outro nome : AK
- Autumn Laments (Atmospheric Black-Germany)
- Autumn Leaves (Melodic Death-Denmark) - Outro nome : ex-Decrial
- Autumn Leaves Fallen (Death Doom-USA) - Outro nome : ALF
- Autumn Moon (Gothic Dark-Sweden)
- Autumn Myst (Black Metal-Canada)
- Autumn Nostalgie (Atmospheric Black-Slovakia)
- Autumn Nostrum (Death Metal-Germany)
- Autumn Of Aeons (Gothic Metal-USA)
- Winterhorde (Symphonic Black-Israel) - Outro nome : ex-Autumn Palace
- Autumn Rain Melancholy (Gothic Doom-Russia)
- Autumn Silence (Progressive Power-USA)
- Autumn Spirits (Folk Metal-Germany)
- Autumn Strife (Black Metal-USA)
- Autumn Suicide (Black Metal-USA)
- Autumn Sun (Melodic Death-South-Africa)
- Autumn Tales (Dark Ambient-Russia)
- Autumn Tears (Atmospheric Gothic-USA)
- Autumn Tenebre (Gothic Death-Mexico)
- Autumn Twilight (Gothic Doom-Hungary)
- Autumn Verses (Melodic Black-Finland)
- Autumn Woods (Death Doom-Russia) - Outro nome : AW
- Autumn, Leaves, Scars (Atmospheric Black-Romania)
- Autumn's Ashes (Gothic Death-USA)
- Autumn's Child (Hard FM-Sweden)
- Autumn's Dawn (Atmospheric Black-Australia)
- Autumn's End (Progressive Death-USA)
- Autumn's Grief (Symphonic Metal-Finland)
- Autumn's Kingdom (Atmospheric Black-Russia)
- Autumn's Mourning (Symphonic Metal-Sweden)
- Autumn's Passengers (Doom Metal-Poland)
- Autumn's Rapture (Ambiant Black-Australia)
- Autumn's Tomb (Black Death-Canada)
- Autumnal (Death Doom-Spain)
- Autumnal Cold (Melodic Death-Poland)
- Autumnal Discord (Atmospheric Doom-Russia)
- Autumnal Perdition (Death Doom-Canada)
- Autumnal Reaper (Black Death-Netherlands)
- Autumnal Sorrow (Ambiant Black-Italy)
- Autumnal Suicide (Atmospheric Metal-Germany)
- Autumnal Winds (Black Death-USA)
- Autumnblaze (Gothic Dark-Germany)
- Autumndusk (Avantgardiste Black-Finland)
- Autumnia (Death Doom-Ukraine)
- Autumns Agony (Doom Black-Mexico)
- Autumns Eyes (Melodic Death-USA)
- Autumnus Aeternus (Black Metal-Uzbekistan)
- Autunna Et Sa Rose (Dark Ambient-Italy)
- Autus (Progressive Power-Puerto-Rico)