Electrical engineering
- Rabočij seminar IEEE Saratov-Penza Chapter
- Racalex Lectures
- RACE Mobile Telecommunications Summit
- RACE Mobile Telecommunications Workshop
- Radar
- Radar Sensor Technology
- Radar Sensor Technology Conference
- Radiation and Its Effects on Components and Systems Conference
- Radiation and Scattering of Electromagnetic Waves
- Radiation Protection in nuclear science and technology
- Radio and Antenna Days of the Indian Ocean
- Radio Day Conference with the International Participation
- Radioelectronic Systems Conference
- Radio Frequency Integrated Circuits (RFIC) Symposium
- Radio Frequency Integrated Circuits Symposium
- Radio Solutions Conference
- Radio Technical Commission for Maritime Services annual assembly meeting
- Raketen- und Raumfahrttagung
- Rassegna Internazionale Elettronica e Nucleare
- RAWCON
- Razrabotka mer zaščity metallov ot korrozii
- Reactor Heat Transfer Conference
- Reactor Noise - SMORN
- Real-Time and Network Systems Conference
- Real Time Conference
- Real-Time Photonic Measurements, Data Management, and Processing
- Real Time Signal Processing
- REALWSN
- Recent Advances in identification and signal processing
- RED-UAS
- Regional Conference on Magnetic and Superconducting Materials
- Region-8 IEEE History of Electro-Technology Conference
- Reliability of compound semiconductors
- Reliability of Compound Semiconductors Workshop
- Reliability of Photovoltaic Cells, Modules, Components, and Systems
- Reliability of Photovoltaic Cells, Modules, Components, and Systems Conference
- Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS and Nanodevices Conference
- Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS Conference
- Reliability, packaging, testing, and characterization of MOEMS/MEMS and nanodevices
- Remotely Sensed Data Compression, Communications, and Processing
- Remote Monitoring and Control Conference
- Remote Sensing Instrumentation
- Remote Sensing System Engineering
- Remote Sensing Workshop
- Renewable Power Generation Conference
- Reproduced Sound
- Research Day NAV
- Research Symposium of Young Scientists Actual Problems of Electrical Drives and Industry Automation
- Resoure Operators Conference
- Respublikanskaja Konferencija "Avtomatizacija i Mechanizacija Proizvodstvennych Processov i Upravlenija
- Reunión Iberoamericana de Óptica
- Reunion. Grupo Español de Trabajo del Cuaternario
- RF and Microwave Conference
- RF and millimeter-wave photonics
- RFID SysTech
- RGW-Symposium über die Anwendung von Radioisotopenmethoden
- RIKEN Symposium on Josephson Electronics
- Ringberg Workshop on High Frequency Waves in Geospace
- Riunione
- Riunione annuale della Associazione elettrotecnica ed elettronica Italiana
- Riunione Annuale della Associazione Elettrotecnica et Elettronica Italiana
- Riunione Nazionale di Elettromagnetismo Applicato
- Robotix-Academy Conference for Industrial Robotics
- Rochester Forth Conference
- ROCS Workshop
- ROCS Workshop <formerly GaAs REL Workshop
- Romanian Microwave Conference (RMC
- Rossijskaja Konferencija po Cholodnoj Transmutacii Jader Chimičeskich Ėlementov i Šarovoj Molnii
- Rossijskaja Naučno-Techničeskaja Konferencija Informatika i Problemy Telekommunikacij
- R. Piotrowski's Readings in Language Engineering and Applied Linguistics
- RSDHA
- RTO Sensors and Electronics Technology Panel (SET) specialists' meeting
- RTO Sensors and Electronics Technology Panel (SET) symposium
- RTO-SET lecture series
- Rudenko International Conference "Methodological Problems in Reliability Study of Large Energy Systems
- Réunion d'information sur l'Eau dans les Corps Poreux
- Rural Electric Power Conference
- ruSMART
- Russia–Japan–USA-Europe Symposium on Fundamental and Applied Problems of Terahertz Devices and Technologies
- Russian-Pacific Conference on Computer Technology and Applications
- Russian Workshop on Power Engineering and Automation of Metallurgy Industry: Research & Practice
- Russisch-Deutsches Zuverlässigkeitsseminar
- RWTÜV-Fachgespräch
- Rēza Kakō Gakkai Kōen