- Oak Furniture Superstore
- Oakley
- Oaks Furniture House
- Oaks Hotels & Resorts
- Oars + Alps
- OASAP
- Oasis Fashions
- Oberoi Hotels & Resorts
- Oculus
- Office
- Office Chair At Work
- Office Star Store
- Official Hcg Diet Plan
- Oittm
- Oka
- Olight Australia
- OliveNation
- OLPRO
- Omio
- Omorovicza
- On Cue Apparel
- Once Upon A Tee
- Oncourt Offcourt
- One Hanes Place
- One Honey Boutique
- One Way Furniture
