- Oviedo City Church
- Ovil - backdrop photo editor
- Ovis
- OVO
- OVU 公寓
- Ovulation Tracker: Period App
- Ovulation Period Tracker
- OVU园区通
- Ovvy - The Service Marketplace
- OwassoApp
- Owatch
- Owatonna Live
- Oway Travel
- Owensboro Christian Church
- Owl - Once Was Lost
- Owl Floral Coloring Book For Adult Relaxation Game
- OWL Intuition
- Owl Square
- Owl Weather
- Owlet
- OwlMakeItSnappy
- Oxbow Country Club
- Oxee
- OX G8TS
- Oxford American
- Oxford Baptist Church App
- Oxford County Library Mobile
- Oxford One Spa
- Oxford Properties Fitness
- Oxford School Kmm
- Oxford SU
- Oxford City Guide an Maps
- Oxfordshire Libraries
- Oxi tracker
- OXMOX - Hamburgs StadtMagazin
- Oxygen Beauty
- OXYGEN CHURCH
- Oxygen Studio
- OXYGYM
- OXYGYM+
- OXYTY