Businesses starting with O
- Oversea Part Trade Co., Ltd.
- Overseas Aluminium Co., Ltd.
- Overseas Aluminum Co., Ltd.
- Overseas Education Centre
- Overseas International Tours Co., Ltd.
- Overseas Marine Cold Storage Co., Ltd.
- Overseas Merchandise Inspection Co., Ltd.
- Overseas Network
- Overseas Operations Co., Ltd.
- Overseas Rayon Industrial Co., Ltd.
- Overseas Shipping Service Co., Ltd.
- Ow Hies Seng Chieng Ngow Kim Ltd., P.
- Owl Auto Parts Center Ltd., P.
- Owl Tai Siang Gold Shop
- Oxal Metal Service Co., Ltd.
- Oxford English Center (oec)
- Oxyweld