Greenwich Business by letter: o
- O'Keefe Construction (Greenwich) Ltd, Greenwich
- O2 Store, Greenwich
- O2 Store, Greenwich
- Oakland Calvert Consultants Ltd, Greenwich
- Ocean Fish Bar, Greenwich
- Octavia Software Solutions Ltd.,, Greenwich
- Office Chair (UK), Greenwich
- Office World, Greenwich
- Ogilby Housing Society, Greenwich
- OHAL Ltd, Greenwich
- Old Bailey Press, Greenwich
- Old Brockleians Society, Greenwich
- Old Colfeians Bowls Club, Greenwich
- Old Friends, Greenwich
- Old Roan Club, Roan School Playing Fields, Greenwich
- Old Shootershillian Rugby Football Club, Greenwich
- Oliver Bond Ltd, Greenwich
- Oliver Smith (Recorder), Greenwich
- Olivet Estates, Greenwich
- Olivet Mortgage Solutions, Greenwich
- One Fifteen, Greenwich
- One Six Two, Greenwich
- One Stop Estates Ltd, Greenwich
- One Stop Expo Ltd, Greenwich
- Onestop Facilities, Greenwich
- Onis, Greenwich
- Onis, Greenwich
- Onthedot Fulfilment Ltd, Greenwich
- Opendoor, Greenwich
- Optic Nerve Ltd, Greenwich
- Optimum Travel Services, Greenwich
- Orie, Greenwich
- Oriekas, Greenwich
- Orpington Mini Skips, Greenwich
- Othello Steak House, Greenwich
- Othens On Line In Greenwich, Greenwich
- Ottakar's PLC, Greenwich
- Our Lady Help Of Christians R C Church, Greenwich
- Our Lady Help Of Christians R C Church, Greenwich
- Our Lady Of Grace R C Church, Greenwich
- Our Lady Of Grace R C Primary School, Greenwich
- Our Lady Star Of The Sea R C Church, Greenwich
- Our Lady Star Of The Sea Rc Church, Greenwich
- Outside In, Greenwich
- Ovens Above, Greenwich
- Oxley Woods Cafe, Greenwich