- O Rastreador do Garimpeiro
- O-City
- O2 Car Control
- Oahu GPS Audio Tour Guide
- Oahu Offline Map and Travel Trip Guide
- Oakland Airport (OAK) + Radar
- Oasi Ca' Granda
- OasisPlus
- Oaxaca Travel Guide with Offline City Street Map
- Oaxis WatchPhone
- ObhaiVTS™
- Obodam
- ObsEnMer
- OBU City
- OBX Tourist Guide
- OCC App
- OCCC Campus Wayfinding
- Occupied: Available TfL Spaces
- Ocean Alert
- Ocean Signal
- Ocean Skills Learning
- Oceania Travel Guide Offline
- OceanTrack
- Ocho Rios Tourism Guide
- Ocorrências Madeira V2
- Octopus Electroverse
- Octopus Systems LTD
- OCナビ
- Odessa Offline Map and Travel Trip Guide
- ODIN Tracking
- Otwarta Turystyka
- ODO Check
- Odometer - Distance Measure & Mileage Calculator
- Odometer+
- Odometer+ Lite
- ODOmobile
- OdosMove
- Off-Road Charts
- Offbeat Attractions
- Offenbacher Mängelmelder
- Officiële App Giethoorn
- Official Dresden App
- Offizielle Weser-Radweg-App
- Offline Guide: Cedar Point
- Offline Guide: PortAventura
- Offline Guide: TDR+TDS
- Offline Map + Car Navigation
- Offline Map App
- Offline Map Navigation
- Offline Maps - custom area caching and real-time label tracking
- Europe Offline map GPS Navi
- Offline Navigation Route Maps
- Offline San Bernardino NF
- Offline Vector Map Downloader
- Offline.maps
- Offshore Safe Approach Calc
- OGPS