| 1981 | Obs Financial Solutions Pte. Ltd.
199304758M | 启用 |
| 1982 | Old & Young Salon
53284039M | 启用 |
| 1983 | Ong Av Specialists Pte Ltd
199301969R | 启用 |
| 1984 | Ohb Real Estate Consultants & Services Pte Ltd
199305430M | 启用 |
| 1985 | Oceandale Investment Pte Ltd
199307064H | 启用 |
| 1986 | Oakshill Investments (s) Pte Ltd
199302530W | 启用 |
| 1987 | Ong Asia Limited
199301724C | 启用 |
| 1988 | O & Y Builders Pte Ltd
199300468R | 启用 |
| 1989 | Ocean Pearl Shipping & Services Pte Ltd
199300034R | 启用 |
| 1990 | Ocean Automation Pte Ltd
199305317H | 启用 |
| 1991 | Oms Holdings Pte. Ltd.
201009540N | 启用 |
| 1992 | O.p.v. (overseas) Singapore Pte Ltd
199306725N | 启用 |
| 1993 | Orgo Pte. Ltd.
200816732E | 启用 |
| 1994 | Oakstone Holdings Pte. Ltd.
200608209W | 启用 |
| 1995 | Omark Trading Singapore Pte Ltd
199000059E | 启用 |
| 1996 | Oh Chuan Huat Trading Pte Ltd
199001677M | 启用 |
| 1997 | Odc Logistics (s) Pte Ltd
199004507W | 启用 |
| 1998 | Oktalex Trading Pte. Ltd.
199001572D | 启用 |
| 1999 | Onix Dna Limited
T11UF4142L | 启用 |
| 2000 | Onyo Engineering Pte Ltd
199304762Z | 启用 |
| 2001 | Oceanfreighters Pte Ltd
199000009C | 启用 |
| 2002 | Ollevan Pte Ltd
199004325M | 启用 |
| 2003 | Ogl Pte Ltd
199004364M | 启用 |
| 2004 | Ocean Man United Pte Ltd
199004085E | 启用 |
| 2005 | Omni Marketing Global Limited
T11UF0409E | 启用 |
| 2006 | Ossia Holdings Pte. Ltd.
199303835M | 启用 |
| 2007 | Optim Application (s) Pte Ltd
199306230Z | 启用 |
| 2008 | Oracle Trading Pte Ltd
199301954H | 启用 |
| 2009 | Owap Investment Pte Ltd
199305629G | 启用 |
| 2010 | Orion Technology (s) Pte Ltd
199303383C | 启用 |