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OJSC Rusal Sayanal (part of RUSAL)
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OJSC Uchalinsky Mining and Processing Plant
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OJSC Vysokogorsky Mining and Processing Plant
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OJSC Zlatoustovsky Metallurgical Plant
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Okaidi (part of ID Group)
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OKAN GROUP
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Okaya
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OkCupid
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O'Keefe Construction (Greenwich) Limited
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OK Hungarian Gloves
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Oki
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Oki Data Americas Inc.
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Oki Electric Industry
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Okimono
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Oklanicsa
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OKOMU OIL PALM COMPANY PLC
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Okonite Company Inc. (The)
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OK SuperTrans
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Okta
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Ok Tedi Mining (JV between Kumul Minerals (State of PNG) (67%) and Western Province entities 33%))
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Oktra Limited
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Okuma
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Okura Hotel
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Ola