- Office supply store
- Organic food store
- Organic shop
- Oriental goods store
- Optometrist
- Outdoor sports store
- Office equipment repair service
- Outlet store
- Office equipment supplier
- Off-road race track
- Orthopedic shoe store
- Occupational safety and health
- Oaxacan restaurant
- Office refurbishment service
- Office furniture store
- Office space rental agency
- Outerwear store
- Office accessories wholesaler
- Oil change service
- Oil refinery