A B C D E F G H I J K L M N O P Q R S T U V WXYZ
| Cavallo | S | Nazione | Anno di nascita | Padre |
| Rachel Alexandra | M | (USA) | 2006 | Medaglia d’Oro |
| Rainbow Quest (e) | H | (USA) | 1981 | Blushing Groom |
| Rakti | H | (GB) | 1999 | Polish Precedent |
| Ramonti | H | (FRA) | 2002 | Martino Alonso |
| Raven’s Pass (e) | H | (USA) | 2005 | Elusive Quality |
| Real Quiet | H | (USA) | 1995 | Quiet American |
| Rebel’s Romance* | C | (IRE) | 2018 | Dubawi |
| Redkirk Warrior | G | (GB) | 2011 | Notnowcato |
| Redoute’s Choice | H | (AUS) | 1996 | Danehill |
| Reference Point | H | (GB) | 1984 | Mill Reef |
| Refuse to Bend | H | (IRE) | 2000 | Sadler’s Wells |
| Regal Glory | M | (USA) | 2016 | Animal Kingdom |
| Reset (i) (e) | H | (AUS) | 2000 | Zabeel |
| Rhododendron | M | (IRE) | 2014 | Galileo |
| Ribchester | H | (IRE) | 2013 | Iffraaj |
| Ribot (i) (mito) | H | (GB) | 1952 | Tenerani |
| Rich Strike (e) | H | (USA) | 2019 | Keen Ice |
| Ridgewood Pearl | M | (GB) | 1992 | Indian Ridge |
| Rip Van Winkle | H | (IRE) | 2006 | Galileo |
| River Verdon | G | (IRE) | 1987 | Be my Native |
| Roaring Lion | H | (USA) | 2015 | Kitten’s Joy |
| Rock of Gibraltar | H | (IRE) | 1999 | Danehill |
| Rock Sand | H | (GB) | 1900 | Sainfoin |
| Rodrigo de Triano | H | (USA) | 1989 | El Gran Senor |
| Rosallion* | H | (IRE) | 2021 | Blue Point |
| Roy H | G | (USA) | 2012 | More than Ready |
| Royal Anthem | H | (USA) | 1995 | Theatrical |
| Royal Applause (e) | H | (GB) | 1993 | Waajib |
| Royal Delta | M | (USA) | 2008 | Empire Maker |
| Royal Heroine | M | (IRE) | 1980 | Lypheor |
| Rubiton | H | (AUS) | 1983 | Century |
| Ruffian | M | (USA) | 1972 | Revierwer |
| Ryafan | M | (USA) | 1994 | Lear Fan |