Offspring (UK - Gwynedd, Bethesda)
Off The Clock (Canada, BC, Victoria)
(Sweden - Vastmanland, Fagersta)
OOF (US - NY)
Oh' Dev (Netherlands - Limburg, Venlo)
OHL (W. Germany - Cologne)
OHM (Denmark - Copenhagen)
Ohne (Switzerland - Zürich)
Oilbag (UK - England, London)
Oiltanker (US - CT, Hartford)
The Ohms (US - NY, Syracuse)
Ohyda (Poland - Lublin)
(UK - Scotland, Lothian, Edinburgh)
(Netherlands - Gelderland, Nunspeet)
Oil Tasters (US - WI, Milwaukee)
Oily Bloodmen (US - OR, Portland)
Ojo Por Ojo (Mexico City)
(Spain - Cataluna, Zarautz, Euskadi)
O!Kult (Yugoslavia)
Okres (Poland - Poznan, Ostrow)
OLD (US - NJ, Bergenfield)
Old City (US - OR, Portland)
(US - CA, San Francisco)
“O” Level (UK - England, London)
Olho Seco (Brazil - São Paulo)
Pauline Oliveros (US - TX, Houston)
Les Olivensteins (France - Rouen)
Olora A Muerte (US - NY)
Los Olvidados (US - CA, San Jose)
(Australia - Melbourne, VIC)
(UK - England - London, New Barnet)
Omit Vomit (Japan)
The Omlits (US - CA, Anaheim)
Onaweta (N. Zealand - Wellington)
Oncle Slam (France - Pau Lescar)
Ona Snop (UK - England, Leeds)
Ond Cirkel (Sweden, Gothenburg)
On Edge (US - WA DC.)
P.S. O'Neill (US - WA, Olympia)
(UK - Scotland - Lothian, Livingstone)
On Point (US - TN, Nashville)
One Last Wish (US - WA DC.)
(Poland - Rzeszów)
The Ones (US - WI, Milwaukee)
One Size Fits All (Japan)
Onward (Norway - Oslo)
(UK - England, Fleetwood)
The Onion Dolls (Belgium - Aalst)
(US - WI, Manitowoc)
The Onlookers (UK - England -
Berkshire, Slough)
Only Alternative (UK - England, London)
Only The Lonely (Sweden - Skania)
The Only Ones (UK - England, London)