RPA
- Australia
- Federal Emergency Management Agency
- Pascal (unit)
- RPA (Rubin Postaer and Associates)
- RPA (TV series)
- Radio del Principado de Asturias
- Railway Procurement Agency
- Rajasthan Police Academy
- Random phase approximation
- Real Property Administrator
- Recombinase polymerase amplification
- Regional Plan Association
- Register of Professional Archaeologists
- Remotely piloted aircraft
- Replication protein A
- Representation of the People Act
- Republic Airways
- Republican Party of Alberta
- Republican Party of Arkansas
- Republican Party of Armenia
- Republican Party of Australia
- Revolutionary Proletarian Army
- Richmond Progressive Alliance
- Robotic process automation
- Romanized Popular Alphabet
- Royal Prince Alfred Hospital
- Rugby Players' Association
- Rural Payments Agency
- Rwandan Defence Forces
- Sydney