- Radio Law
- RBA
- RCA
- RDF (Resource Description Framework)
- RDF Site Summary
>> See: " RSS " - Real-time operating system
- Redactable signature
- Registration Authority (RA)
- Remote Access
- Rendering
- Repository
- Resin
- Resin molding
- Resource allocation
- Resource Description Framework
>> See: " RDF " - Resource pool
- Retinex theory
- RFID
- RFID tag
- Rich Site Summary
>> See: " RSS " - RoHS Directive
- RSA cryptosystem
- RSS (Rich Site Summary or RDF Site Summary)
