ROA
- Eric Bakovic
- Peugeot ROA
- ROA (artist)
- ROA Crewe-Milnes
- ROA Time
- Racehorse Owners Association
- Raman optical activity
- Real Options Analysis
- Rear Occupant Alert
- Reformed Armenian Orthography
- Refugee Olympics Athletes
- Rehabilitation of Offenders Act 1974
- Republic of Artsakh
- Reserve Officers Association
- Resource Public Key Infrastructure
- Resource-oriented architecture
- Retford Oaks Academy
- Return on assets
- Revolt On Antares
- Right occipito-anterior
- Rivals of Aether
- River Oaks Academy
- Roa (disambiguation)
- Roaccutane
- Roanoke-Blacksburg Regional Airport
- Route Origination Authorization
- Route of administration
- Ruger Old Army
- Rules of Acquisition
- Russian Liberation Army
- Róa
- Röa (disambiguation)