| 5311 | Onestreet 53306279M | Active |
| 5312 | Oxalor Pte. Ltd. 201524305C | Active |
| 5313 | Obst Trading 52865342C | Active |
| 5314 | Outline Forever Beauty Fashion 52835221X | Active |
| 5315 | One Link Insurance Agency Pte. Ltd. 201431067C | Active |
| 5316 | Orbitak Asia Pacific Llp T10LL1810L | Active |
| 5317 | One Asia Trading And Resource Pte. Ltd. 201306391C | Active |
| 5318 | O & R Kolezione Trading @ Perwira Music 52888447J | Active |
| 5319 | Onyx & Garnet Trading 53318343W | Active |
| 5320 | Origo Ventures Pte. Ltd. 200903749K | Active |
| 5321 | One Commercial @rf Pte. Ltd. 201224532E | Active |
| 5322 | Oal International Pte. Ltd. 201508634C | Active |
| 5323 | Old Street Bak Kut Teh (arc) Pte. Ltd. 201508701E | Active |
| 5324 | Orac International Pte. Ltd. 201135944H | Active |
| 5325 | Orion Engineered Carbons Pte. Ltd. 201129636C | Active |
| 5326 | Owens Illinois Singapore Pte. Ltd. 201130866Z | Active |
| 5327 | Outshine Education Centre Pte. Ltd. 201023515H | Active |
| 5328 | Oxford Global Marketing Singapore Private Limited 201201057G | Active |
| 5329 | Olive Tree Baby & Kids Clinic Pte. Ltd. 201200102G | Active |
| 5330 | Office Mate Ts Pte. Ltd. 201508599W | Active |
| 5331 | Oliver James Associates Group Limited T16UF1564G | Active |
| 5332 | Okahata Singapore Pte. Ltd. 201224987C | Active |
| 5333 | Orange22 Pte. Ltd. 201431253N | Active |
| 5334 | Oasis Biz Pte. Ltd. 201215031Z | Active |
| 5335 | Oscars Auto Private Limited 201133756C | Active |
| 5336 | Oceanwoods Pte. Ltd. 201130071C | Active |
| 5337 | Obbi Good Label Pte. Ltd. 201134375N | Active |
| 5338 | Old Village Catering Pte. Ltd. 201404153N | Active |
| 5339 | Ocasia Group Holdings (s) Pte. Ltd. 201130655G | Active |
| 5340 | Om Materials Trades (s) Pte. Ltd. 201119608G | Active |