- Outdoor sports store
- Outlet mall
- Orthopedic shoe store
- Okonomiyaki restaurant
- Oyster bar restaurant
- Ophthalmology clinic
- Otolaryngologist
- Office equipment repair service
- Optical wholesaler
- Orthopedic surgeon
- Opel dealer
- Oil wholesaler
- Oil store
- Oriental goods store
- Opera house
- Olive oil manufacturer
- Occupational medical physician
- Orthodontist
- Otolaryngology clinic
- Office