| 1981 | Old & Young Salon
53284039M | Aktif |
| 1982 | Ong Av Specialists Pte Ltd
199301969R | Aktif |
| 1983 | Ohb Real Estate Consultants & Services Pte Ltd
199305430M | Aktif |
| 1984 | Oceandale Investment Pte Ltd
199307064H | Aktif |
| 1985 | Oakshill Investments (s) Pte Ltd
199302530W | Aktif |
| 1986 | Ong Asia Limited
199301724C | Aktif |
| 1987 | O & Y Builders Pte Ltd
199300468R | Aktif |
| 1988 | Ocean Pearl Shipping & Services Pte Ltd
199300034R | Aktif |
| 1989 | Ocean Automation Pte Ltd
199305317H | Aktif |
| 1990 | Oms Holdings Pte. Ltd.
201009540N | Aktif |
| 1991 | O.p.v. (overseas) Singapore Pte Ltd
199306725N | Aktif |
| 1992 | Orgo Pte. Ltd.
200816732E | Aktif |
| 1993 | Oakstone Holdings Pte. Ltd.
200608209W | Aktif |
| 1994 | Omark Trading Singapore Pte Ltd
199000059E | Aktif |
| 1995 | Oh Chuan Huat Trading Pte Ltd
199001677M | Aktif |
| 1996 | Odc Logistics (s) Pte Ltd
199004507W | Aktif |
| 1997 | Oktalex Trading Pte. Ltd.
199001572D | Aktif |
| 1998 | Onix Dna Limited
T11UF4142L | Aktif |
| 1999 | Onyo Engineering Pte Ltd
199304762Z | Aktif |
| 2000 | Oceanfreighters Pte Ltd
199000009C | Aktif |
| 2001 | Ollevan Pte Ltd
199004325M | Aktif |
| 2002 | Ogl Pte Ltd
199004364M | Aktif |
| 2003 | Ocean Man United Pte Ltd
199004085E | Aktif |
| 2004 | Omni Marketing Global Limited
T11UF0409E | Aktif |
| 2005 | Ossia Holdings Pte. Ltd.
199303835M | Aktif |
| 2006 | Optim Application (s) Pte Ltd
199306230Z | Aktif |
| 2007 | Oracle Trading Pte Ltd
199301954H | Aktif |
| 2008 | Owap Investment Pte Ltd
199305629G | Aktif |
| 2009 | Orion Technology (s) Pte Ltd
199303383C | Aktif |
| 2010 | Overseas Carpets Limited
T10UF3531L | Aktif |