- Autoscan (Deathcore-Russia)
- Autocrat (Doom Metal-USA)
- Auta (Alternative Metal-France)
- Atrocia (Death Metal-France)
- Auktion (Crust-Sweden)
- Atomica (Gothic Metal-Russia)
- Automag (Heavy Rock-USA)
- Automan.Ca (Heavy Rock-Canada)
- Automation (Death Metal-Australia)
- Autokannon (Thrash Metal-Australia)