| Radiant | R 45 |
| Raejean | R 48 |
| Rafi | R 24 |
| Rameses | R 48 |
| Ranger | R ± 48 |
| Rasakura | R 49 |
| Real Gold | R 47 |
| Red Elf | R 24 |
| Red Gleam | R 49 |
| Red Overlay | R & M 36 |
| Red Robe | R 48 |
| Red Valor | R 51 |
| Rembrandt | L 24 |
| Reverie | R 48 |
| Rhaetica | R & M 24 |
| Rhea | R 60 |
| Rheinfels | R 24 |
| Rheintochter | R 24 |
| Ricardi | S, R 48 |
| Richard II | R 24 |
| Romance | R 24 |
| Rosakura | R 49 |
| Rose Doiminion | R ± 48 |
| Rose Madder | R 48 |
| Rosemist | R 40 |
| Rosy Wings | R 50 |
| Royal Coach | R 49 |
| Ruberrima | L 24 |
| Rubyd | R 24 |
| Ruby Glow | S 47 |
| Rudigore | S 24 |
| Rupert | R 40 |
| Ruth Pollock | R 48 |