R
- RAIR "Black Box" (also ran MP/M)
- Research Machines 380Z and LINK 480Z
- Rex Computer Company REX 1
- Robotron A 5120
- Robotron KC 85/1 and KC 87
- Robotron PC 1715
- Royal Business Machines 7000 "Friday"
Read more about this topic: List Of Machines Running CP/M