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Orient Craft
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Orient Express
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Orient Lines (part of Star Cruises)
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Orient Overseas Container Line (OOCL, part of Orient Overseas (International) Limited)
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Oriflame Holdings AG
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Origen Resources
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Original Beans
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Original Marines
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Original Penguin (part of Perry Ellis International)
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Original Power
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Origin Energy
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Origin Housing
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Origin UK Operations Limited (t/a Origin Fertilisers)
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Orion
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Orion Corp
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Orion Mine Finance
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Orion Resource Partners
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Orion Security (Honduras)
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Orissa Mining
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Orix Corporation
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OrkideExpressen
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Orkidé Villa
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Orkla ASA
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Orkut (part of Google)