Omnia

Country: Holandia / Holland
Date of establishing : 1996
Music genere: folk, medieval

Orange Sector

Country: Niemcy / Germany
Date of establishing : 1992
Music genere: ebm, old school ebm

Ordo Rosarius Equilibrio

Country: Szwecja / Sweden
Date of establishing : 1993-05
Music genere: apocalyptic, apocalyptic folk, dark ambient, neofolk

Organic Cage

Country: Niemcy / Germany
Date of establishing : 2002
Music genere: powernoise, rhythmic noise

Orphx

Country: Kanada / Canada
Date of establishing : 1993
Music genere: electronic, experimental, industrial, noise, rhythmic noise

Ost+Front

Country: Niemcy / Germany
Date of establishing : 2008
Music genere: gothic, industrial, industrial metal, metal