- Oki Islands Ferry Guide
- Okinoshima Finder
- OkMap Mobile
- OKQ8 Elbilsladdning
- OkyDoky App
- Old Aberdeen
- Old Bucharest (Lite Version)
- Old Holland Tour
- Old Satellite Map JAPAN
- Olife Energy
- OLLY Car Assistant
- OLP WDW Transportation Wizard
- Olsztyńskie Cmentarze
- Oltrarno App
- OltrepoPavese
- Olympia Tracking
- Olympic Brick Finder
- Oman Airports
- Oman Offline Map and Travel Trip Guide
- Oman Real
- Omio: Train, coach and ferries
- OMN - Outdoor Map Navigator
- OmniAccess Stellar LBS Install
- OmniBuzz - Bus Alarm
- Omnicomm for iPhone
- Omnie CUE 歐尼交通情報達人
- Omnie GO
- OmniRide
- OmniTracker
- OmniTrax
- Omniweb
- Omobi Ortsbus Murnau
- On Command Connect Global
- ON appið