| 1981 | Orion Engineered Carbons International Gmbh
T11UF3985L | Aktif |
| 1982 | Oh Hup Huat Sesame Oil
37774700M | Aktif |
| 1983 | Orix Holdings Limited
T11UF2099B | Aktif |
| 1984 | Oman Trading International Ltd.
T11UF0684C | Aktif |
| 1985 | Olfi Lux Holdings Sarl
T11UF5054H | Aktif |
| 1986 | Ovd Kinegram Ag
T12UF0006C | Aktif |
| 1987 | Oak Unipro Solutions Pte. Ltd.
201313649W | Aktif |
| 1988 | Orbit Peripherals Pte Ltd
199004577G | Aktif |
| 1989 | Osf Transport Services
53232543E | Aktif |
| 1990 | On The Ball Consulting
53136115B | Aktif |
| 1991 | Ohana Holdings Pte. Ltd.
200201159W | Aktif |
| 1992 | Orchard Maharajah Restaurant Pte Ltd
199003148E | Aktif |
| 1993 | Orient Bio Tech Pte Ltd
199001664G | Aktif |
| 1994 | Optimus Consulting Pte. Ltd.
201109415Z | Aktif |
| 1995 | Overseas Education Consultancy Pte Ltd
199002700W | Aktif |
| 1996 | Orix Aircraft Corporation
T11UF0900G | Aktif |
| 1997 | Ong Eng Siang Trading
37213700L | Aktif |
| 1998 | Orient Hero (asia) Limited
T11UF4837L | Aktif |
| 1999 | Ooffle Pte. Ltd.
200513033N | Aktif |
| 2000 | Oocl Logistics (singapore) Pte. Limited
199001029D | Aktif |
| 2001 | Orient Tainers Pte Ltd
199005103M | Aktif |
| 2002 | Options Publications Pte Ltd
199005281G | Aktif |
| 2003 | Orchard Medical Clinic Pte. Ltd.
200701433H | Aktif |
| 2004 | One Earth Holdings Pte. Ltd.
200810989R | Aktif |
| 2005 | Onesta Consultancy & Management Service
53316649K | Aktif |
| 2006 | Overseas Connect Pte. Ltd.
200809842D | Aktif |
| 2007 | Oasis Commodities Pte. Ltd.
201532237M | Aktif |
| 2008 | Og Global Venture Pte. Ltd.
201532069D | Aktif |
| 2009 | One Junction Private Limited
200413734D | Aktif |
| 2010 | One Gym Global
53294455X | Aktif |