Featured bands
| Band | Style | Country | Formed | Split | Fans | ||
|---|---|---|---|---|---|---|---|
| 601 | 
|
Ophthalamia 1989-1998
|
Black metal | Sweden | 1989 | 1998 | 28 |
| 602 | 
|
Ordained Fate 1989-
|
US power metal Thrash metal |
USA | 1989 | - | 0 |
| 603 | 
|
Ordoxe 1989-2017
|
Black metal | Canada | 1989 | 2017 | 2 |
| 604 | 
|
O.L.D. 1988-1995
|
Grindcore Avantgarde industrial metal |
USA | 1988 | 1995 | 1 |
| 605 | 
|
Obscure 1988-
|
Death metal | Spain | 1988 | - | 3 |
| 606 | 
|
Old Funeral 1988-2015
|
Death metal | Norway | 1988 | 2015 | 17 |
| 607 | 
|
Opera IX 1988-
|
Symphonic black metal Black metal Folk metal |
Italy | 1988 | - | 96 |
| 608 | 
|
Overdrive (UK) 1988-
|
New wave of British heavy metal Heavy metal |
United Kingdom | 1988 | - | 1 |
| 609 | 
|
Oxbow 1988-
|
Stoner metal Doom metal Avantgarde metal |
USA | 1988 | - | 13 |
| 610 | 
|
Obliveon 1987-
|
Technical thrash metal Progressive death metal Groove thrash metal |
Canada | 1987 | - | 21 |
| 611 | 
|
Order From Chaos 1987-2012
|
Black metal Death metal |
USA | 1987 | 2012 | 2 |
| 612 | 
|
Overload 1987-
|
Power metal Heavy metal |
Sweden | 1987 | - | 0 |
| 613 | 
|
Overthrow 1987-1991
|
Thrash metal Death metal |
Canada | 1987 | 1991 | 1 |
| 614 | 
|
Opposition Party 1986-
|
Thrash metal | Singapore | 1986 | - | 1 |
| 615 | 
|
Original Sin 1986-1986
|
Heavy metal Speed metal |
USA | 1986 | 1986 | 0 |
| 616 | 
|
Ossian 1986-
|
Heavy metal | Hungary | 1986 | - | 26 |
| 617 | 
|
Overflash 1986-
|
Industrial death metal Industrial metal |
Sweden | 1986 | - | 0 |
| 618 | 
|
Osiris (NED) 1985-1992
|
Progressive thrash metal | The Netherlands | 1985 | 1992 | 0 |
| 619 | 
|
Osmi Putnik 1985-
|
Heavy metal | Croatia | 1985 | - | 5 |
| 620 | 
|
Overlorde 1985-
|
US power metal | USA | 1985 | - | 8 |
| 621 | 
|
Obituary 1984-
|
Death metal | USA | 1984 | - | 842 |
| 622 | 
|
Oliver Magnum 1983-1997
|
US power metal | USA | 1983 | 1997 | 3 |
| 623 | 
|
Omen 1983-
|
Heavy metal US power metal |
USA | 1983 | - | 59 |
| 624 | 
|
Onslaught 1983-
|
Thrash metal | United Kingdom | 1983 | - | 187 |
| 625 | 
|
Overdose 1983-
|
Thrash metal | Brazil | 1983 | - | 8 |
| 626 | 
|
Obsession 1982-
|
US power metal | USA | 1982 | - | 13 |
| 627 | 
|
Outrage (JPN) 1982-
|
Thrash metal | Japan | 1982 | - | 2 |
| 628 | 
|
Overdose (GER) 1982-1986
|
Heavy metal | Germany | 1982 | 1986 | 0 |
| 629 | 
|
Obús 1980-
|
Heavy metal | Spain | 1980 | - | 12 |
| 630 | 
|
Odin 1980-
|
US power metal Glam metal |
USA | 1980 | - | 0 |
| 631 | 
|
Overdrive 1980-
|
Heavy metal | Sweden | 1980 | - | 6 |
| 632 | 
|
Overkill 1980-
|
Thrash metal | USA | 1980 | - | 1020 |
| 633 | 
|
Ozzy Osbourne 1979-
|
Heavy metal |
United Kingdom USA |
1979 | - | 968 |
| 634 | 
|
Oz 1977-
|
Heavy metal |
Finland Sweden |
1977 | - | 11 |
| 635 | 
|
Ostrogoth 1976-
|
Heavy metal | Belgium | 1976 | - | 9 |
| 636 | O Kee Pa | Alternative metal | France | - | - | 0 | |
| 637 | 
|
Onelegman | Nu metal | Italy | - | - | 1 |
| 638 | Onethirtyeight | Electronica | United Kingdom | - | - | 0 | |
| 639 | 
|
Opthalidon | Industrial metal | Italy | - | - | 1 |
| 640 | Opus | Progressive rock | United Kingdom | - | - | 0 | |
| 641 | 
|
Ordinance (FIN) | Black metal | Finland | - | - | 3 |
| 642 | 
|
Osada Vida | Progressive rock | Poland | - | - | 1 |
| 643 | Osoka | Post-metal | Russia | - | - | 0 | |