- Others
- Office supply store
- Outdoor furniture store
- Outdoor sports store
- Outdoor clothing and equipment shop
- Off track betting shop
- Outboard motor store
- Outlet mall
- Outlet store
- Organic food store
- Office furniture store
- Office equipment supplier
- Outdoor activity organiser
- Office of a fair trade organization
- Occupational health service
- Occupational medical physician
- Occupational therapist
- Observatory
- Osteopath
- Oil change service