Científicos e inventores: apellidos que comienzan con "R"
- Rankine, William John Macquorn
- Raoult, François Marie
- Réaumur, René Antoine Ferchault de
- Regnault, Henry Victor
- Reynolds, Osborne
- Richter, Charles Francis
- Riemann, Bernhard
- Ritter, Johann Wilhelm
- Roemer, Olaus
- Rolle, Michel
- Roscoe, Henry Enfield
- Ruffini, Paolo
- Russell, Bertrand
- Russell, Henry Norris
- Rydberg, Robert Johannes