- Ace (JAP) (Visual Kei-Japan) - Other name : NEO ROCK'N ROLL STAR→☆ACE, ネオロックンロールスタ→☆エース
- A (JAP) (Progressive Metal-Japan) - Other name : Anonymous Confederate Ensemble, ACE
- Ace (FRA) (Heavy Metal-France)
- Trayce (Metalcore-Brazil) - Other name : ex-Ace 4 Trays
- Ace Augustine (Metalcore-USA) - Other name : AA
- Ace Frehley (Hard Rock-USA)
- Ace Lane (Heavy Metal-United-Kingdom)
- Ace Of Hearts (Gothic Metal-United-Kingdom)
- Ace The Raven (Thrash Metal-USA)
- Acedi (Doom Black-Denmark)
- Acedia (TUR) (Melodic Doom-Turkey)
- Acedia (ARG) (Heavy Metal-Argentina)
- Acedia (USA) (Deathcore-USA)
- Acédia (CAN) (Black Metal-Canada)
- Acedia Mundi (Black Metal-France)
- Acedio (Heavy Metal-Argentina)
- Acefalo (Thrash Metal-Argentina)
- Aceium (Heavy Metal-Canada)
- Acéldama (CR) (Death Grind-Costa-Rica)
- Aceldama (USA) (Thrash Metal-USA)
- Aceldama (UK) (Atmospheric Metal-United-Kingdom)
- Acelsia (Gothic Metal-Norway) - Other name : ex-View
- Acendra (Power Metal-Spain)
- Aceous (Metalcore-Australia)
- Acephala (Brutal Death-Ukraine)
- Acephalia (Metalcore-Austria)
- Acephalix (Crust-USA)
- Acephalous (Black Death-Belgium)
- Acephalus (USA) (Brutal Death-USA)
- Acephalus (GER) (Death Thrash-Germany)
- Acephaly (Brutal Death-Bolivia)
- Aceptic Goitre (Brutal Death-Greece)
- Acer Fury (Heavy Metal-Germany)
- Acera (Metalcore-USA)
- Acerbic Angel (Thrash Metal-Denmark) - Other name : ex-Eruption
- Acerbitas (Black Metal-Sweden)
- Acerbity (Technical Thrash-USA)
- Acerbus (Death Metal-USA)
- Aceria (Power Metal-Mexico)
- Acero (CR) (Heavy Metal-Costa-Rica)
- Acero (ESP) (Heavy Metal-Spain)
- Acero (COL) (Heavy Metal-Colombia)
- Acero Bélico (Thrash Metal-Chile)
- Acero De Guerra (Power Metal-Mexico)
- Acero Letal (Heavy Metal-Chile)
- Acero Liquido (Heavy Metal-Venezuela)
- Betrayal (CHL) (Thrash Metal-Chile) - Other name : ex-Acero Oscuro
- Acerose (Melodic Death-USA)
- Acerus (Heavy Metal-USA)
- Aces (GER) (Glam Rock-Germany)
- Aces (USA) (Heavy Metal-USA)
- Aces High (SWE) (Hard FM-Sweden) - Other name : ex-Eyes
- Aces High (UK) (Power Metal-United-Kingdom)
- Aces Wild (Hard Rock-Canada)
- Acess (Heavy Metal-Colombia)
- Acetaria (Metalcore-Argentina)
- Acetic Voice (Thrash Metal-Greece)
- Acetone (CAN) (Death Metal-Canada)
- Acétone (Death Metal-France)
- Acetonizer (Grindcore-Russia)
- Acetylene (USA) (Thrash Speed-USA)
- Acetylene (FRA) (Thrash Metal-France)