R
- Double R Racing, formerly Räikkönen Robertson Racing – Kimi Räikkönen and Steve Robertson
- Railton – Reid Railton
- Rainer-Wurz.com – Markus Rainer and Alexander Wurz
- Ralt – Ron and Austin Lewis Tauranac
- RAM Racing – Mike RAlph and John Macdonald
- Rawlings – George and Alfred Rawlings
- RE Amemiya – Asami Amemiya
- Rebaque – Hector Rebaque
- Reiter Engineering – Hans Reiter
- Renault – Louis Renault
- Rensi-Hamilton Racing – Ed and Sam Rensi, and Bobby Hamilton, Jr.
- REO Motor Car Company – Ransom E. Olds
- Reuters – Paul Reuter
- Reynard Motorsport – Adrian Reynard
- Richard Childress Racing – Richard Childress
- Richard Petty Motorsports – Richard Petty
- Rickenbacker – Adolph Rickenbacher
- Riddell – John Tate Riddell
- Rieger Tuning – Toni Rieger
- Riese und Müller – Markus Riese and Heiko Müller
- Ripspeed – Keith Ripp
- Riley & Scott – Bob Riley and Mark Scott
- Riley Technologies – Bob and Bill Riley
- Rinspeed – Frank RINderknecht
- Rizzoli-Corriere della Sera – Angelo Rizzoli
- R. J. Reynolds Tobacco Company (RJR) – R. J. Reynolds
- RM Auctions – Rob Myers
- RML Group – Ray Mallock
- Robeez – Sandra Wilson's son Robert
- Robert Bosch GmbH – Robert Bosch
- Robert Yates Racing – see Yates Racing
- Roberts Radio – Harry Roberts
- Rockefeller Group – John D. Rockefeller, Jr.
- Rockwell International, North American Rockwell, Rockwell Semiconductor – Willard Rockwell
- Rod Millen Motorsports – see MillenWorks
- Rod Nash Racing – Rod Nash
- Rogers Communications – Edward S. "Ted" Rogers
- Rogers Locomotive and Machine Works – Thomas Rogers
- Rogers Vacuum Tube Company – Edward S. Rogers, Sr.
- Rolls-Royce plc, Rolls-Royce Motor Cars – Charles Rolls and Henry Royce
- Rondel Racing – RON Dennis and Neil TrunDLE
- Rossetti Architects – Gino Rossetti and Matthew L. Rossetti
- Roush Performance, Roush Fenway Racing – Jack Roush
- RPG Group – Rama Prasad Goenka
- RSA Security – Ronald Rivest, Adi Shamir, and Len Adleman
- Rudge-Whitworth – Daniel Rudge
- Ruf Automobile – Alois Ruf
- Ryanair – Tony Ryan
Read more about this topic: List Of Companies Named After People