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- Rowley Associates
- RFM_Murata
- RF360
- Redpine Signals
- Red Pitaya
- Raspberry Pi
- Raychem_TE Connectivity
- Radiall
- RAF Electronic Hardware
- Rectron
- REAN_Neutrik
- RAFI
- Rosenberger
- RECOM Power
- Renesas Electronics
- RF Digital Wireless
- Ricoh Electronic Devices Company
- ROHM Semiconductor
- RushUp
- RRC Power Solutions
- ROBOTIS
- Rigado
- Renata
- ReFLEX CES
- RECOM Lighting