| 1951 | Ocean Fisheries Pte Ltd
198701323C | Active |
| 1952 | Optuminsight, Inc.
T11UF0020K | Active |
| 1953 | Overview Construction (pte) Ltd
199300978C | Active |
| 1954 | Orchidville Pte Ltd
199305603R | Active |
| 1955 | Osi Information Technology Pte Ltd
199304618G | Active |
| 1956 | Ornamental Mouldings Pte Ltd
199306353M | Active |
| 1957 | Oriensspes Inc.
T11UF5045K | Active |
| 1958 | Oil Field Instrumentation (india) Private Limited
T11UF4138D | Active |
| 1959 | Ocean Paradise Pte Ltd
198700398H | Active |
| 1960 | Object X Technologies Pte Ltd
198702614Z | Active |
| 1961 | Oriental Classic Pte Ltd
T11UF3583L | Active |
| 1962 | Orissa Exim Private Limited
T11UF5105C | Active |
| 1963 | Oiltrans Services (s) Pte Ltd
198700229R | Active |
| 1964 | On The Green Sports (1987) Pte Ltd
198704065Z | Active |
| 1965 | Omni Marketing Group,asia Pte Ltd
198700136C | Active |
| 1966 | Oceangrand Chartering (singapore) Pte. Ltd.
200903296H | Active |
| 1967 | Open D Group International Limited
T11UF3585C | Active |
| 1968 | Openschoolbag Pte. Ltd.
201316495W | Active |
| 1969 | Oris Singapore Pte. Ltd.
199006219C | Active |
| 1970 | Oudi Box
53325388L | Active |
| 1971 | Ogura Construction (singapore) Pte Ltd
198701399R | Active |
| 1972 | Oriental Great Dragon Investment & Development Pte Ltd
199303006H | Active |
| 1973 | Octoshape Aps
T11UF5032F | Active |
| 1974 | Ohm Overseas Projects Pte Ltd
198702453K | Active |
| 1975 | Oregan Networks Pte. Ltd.
201303857Z | Active |
| 1976 | Oji Interpack Singapore Pte. Ltd.
198704014E | Active |
| 1977 | Osl Shipping Limited
T12UF0005G | Active |
| 1978 | One97 Communications Ltd
T11UF2075H | Active |
| 1979 | Omya Holding Ag
T11UF4844F | Active |
| 1980 | Oil Marketing & Trading International
T11UF3991K | Active |