Companies catalogue
- O School, Singapore
- O a Jaleel, Singapore
- OCBC Bank, Singapore
- OSAC International College, Singapore
- OTO Bodycare Pte Ltd - Suntec City (Consignment Outlet), Singapore
- OUE Limited, Singapore
- Oaks Training, Singapore
- Oasia Hotel Downtown, Singapore
- Oasia Hotel Novena, Singapore
- Oasis Garden, Singapore
- Oasis Terraces, Singapore
- Office Compass, Singapore
- Office Maintenance Enterprise Pte. Ltd., Singapore
- Office Spaces - King's Centre, Singapore
- Office Spaces PSA Vista, Singapore
- Oh Teck Huat Civil Engineering Constraction & Plumbing, Singapore
- Okio, Singapore
- Old Bukit Timah Fire Station, Singapore
- Olde Cuban, Singapore
- Oliver Quek & Associates, Singapore
- Omega International College, Singapore
- Omni Theatre, Singapore
- One-Ninety Restaurant, Singapore
- OneCare Medical Clinic Boon Lay, Singapore
- Openix Pte Ltd, Singapore
- Options Pilates Studio, Singapore
- Orchard Cafe, Singapore
- Orchard Road Homes - Sale & Rent, Singapore
- Ossia Music School (Bukit Batok), Singapore
- Ossia Music school, Singapore
- Our Music Studio, Singapore
- Ova, Singapore