- Own it Fit
- Own Look
- Own My Health
- OWNU: Strength & Gym Training
- OWQLO
- OWS
- Ox Clin
- Ox Ridge
- Ox Vibe
- Oxalator - Low Oxalate diet. It’s easy!
- Oxalis Osteopathy
- Oxana Salon
- OX G8TS
- Oxford AHSN
- Oxford Community Stroke Proj
- Oxford Karate Institute
- Oxford Medical
- Oxford One Spa
- Oxford Properties Fitness
- Oxford University Sport
- Oxfordshire Walks
- OxiCare
- Oxide gym
- Oxigen
- Oxil Pulse
- Oximeter-H
- OxiPur – Gota Cálculos Renales
- Oxisto Inspiration
- OxiTone
- OxSport
- OXY: Treningi i Prosta Dieta
- Oxycise! Zero-Impact Fitness
- Oxygen and Iron Studio
- Oxygen by Aparito
- Oxygen Cylinder Autonomy Calc
- Oxygen Fit
- Oxygen Fitness
- Oxygen Fitness 365
- Oxygen Gym
- Oxygen Padel