| Sadler's Wells | 1981 | Northern Dancer系 |
| Sagace | 1980 | Clarion系 |
| Sain | 1894 | St. Simon系 |
| Sainfoin | 1877 | Pot 8 o's系 |
| Saint Cyrien | 1980 | Clarion系 |
| (アラ) Saklawy Djedran | 1880 | Arab父系 |
| Salieri | 1980 | Teddy系 |
| Sallust | 1969 | Fair Trial系 |
| Sallymount | 1956 | Owen Tudor系 |
| Salmagundi | 1924 | Phalaris系 |
| Salmon-Trout | 1921 | The Tetrarch系 |
| Salse | 1985 | Northern Dancer系 |
| (アア) Saltiador | 1918 | Arab父系 |
| Salt Lake | 1989 | Northern Dancer系 |
| Salvator | 1886 | Pot 8 o's系 |
| Samaritain | 1941 | St. Simon系 |
| Sanctus | 1960 | Fine Top系 |
| Sans Souci | 1904 | Pot 8 o's系 |
| Santa Claus | 1961 | Hurry On系 |
| Sant Ilario | 1896 | Pot 8 o's系 |
| Santoi | 1897 | King Fergus系 |
| Saraband | 1883 | Pot 8 o's系 |
| Sassafras | 1967 | Hurry On系 | Savile | 1884 | Hampton系 |
| Sayajirao | 1944 | Nearco系 |
| Sayani | 1943 | Fairway系 |
| Scaliger | 1920 | Bend Or系 |
| Scottish Union | 1935 | Pharos系 |
| Scratch | 1947 | Pharis系 |
| Scythian | 1851 | Pot 8 o's系 |
| Sea-Bird | 1962 | Native Dancer系 |
| Sea Hero | 1990 | Danzig系 |
| Seattle Slew | 1974 | Bold Ruler系 |
| Secretariat | 1970 | Bold Ruler系 |
| Seeking the Gold | 1985 | Mr. Prospector系 |
| Seductor | 1943 | Fairway系 |
| Selim | 1802 | Herod系 |
| Selkirk | 1988 | エタン系 |
| Septieme Ciel | 1987 | Bold Ruler系 |
| Shadeed | 1982 | Nijinsky系 |
| (アア) Shagya | 1830 | Arab父系 |
| (アア) Shagya IV | 1841 | Arab父系 |
| (アア) Shagya VIII | 1869 | Arab父系 |
| (アア) Shagya X | 1855 | Arab父系 |
| (アア) Shagya XI | 1886 | Arab父系 |
| (アア) Shagya XVI | 1902 | Arab父系 |
| Sham | 1970 | Phalaris系 |
| Shantung | 1956 | Prince Bio系 |
| Shareef Dancer | 1980 | Northern Dancer系 |
| Sharpman | 1976 | エタン系 |
| Sharpen Up | 1969 | エタン系 |
| Sharpo | 1977 | エタン系 |
| Sheen | 1885 | Hampton系 |
| Sheet Anchor | 1832 | Eclipse系 |
| Shergar | 1978 | Fairway系 |
| Sheshoon | 1956 | Hurry On系 | Shetland | 1908 | St. Simon系 |
| Shirley Heights | 1975 | Mill Reef系 |
| Shy Groom | 1979 | Red God系 |
| Sickle | 1924 | Phalaris系 |
| Sicambre | 1948 | Prince Bio系 |
| Sideral | 1948 | Fairway系 |
| (アラ) Siglavy | ---- | Arab父系 |
| (アラ) Siglavy-Bagdady | 1895 | Arab父系 |
| Signal Light | 1936 | Pharos系 |
| Signorino | 1902 | Pot 8 o's系 |
| Silver Deputy | 1985 | Northern Dancer系 |
| Silver Hawk | 1979 | Roberto系 |
| Simon Square | 1904 | St. Simon系 |
| Sing Sing | 1957 | Owen Tudor系 |
| Singspiel | 1992 | Sadler's Wells系 |
| Sir Archy | 1802 | Herod系 |
| Sir Cosmo | 1926 | Bend Or系 |
| Sir Gallahad | 1920 | Teddy系 |
| Sir Gaylord | 1959 | Royal Charger系 |
| Sir Hercules | 1826 | Pot 8 o's系 |
| Sir Hugo | 1889 | Pot 8 o's系 |
| Sir Ivor | 1965 | Sir Gaylord系 |
| Sir Martin | 1906 | Matchem系 |
| Sir Modred | 1877 | Herod系 |
| Sir Paul | 1802 | Herod系 |
| Sir Peter | 1784 | Herod系 |
| Sir Tristram | 1971 | Sir Gaylord系 |
| Sky Chase | 1984 | Son-in-Law系 |
| Skywalker | 1982 | Intent系 |
| Slew o' Gold | 1980 | Bold Ruler系 |
| Slewpy | 1980 | Bold Ruler系 |
| Slip Anchor | 1982 | Mill Reef系 |
| Smart Strike | 1992 | Mr. Prospector系 |
| Smarty Jones | 2001 | Mr. Prospector系 |
| Solario | 1922 | Hampton系 |
| Solar Slipper | 1945 | Blandford系 |
| Soldennis | 1833 | Bend Or系 |
| Solferino | 1940 | Fairway系 |
| Soliman | 1892 | St. Simon系 |
| Solon | 1861 | Matchem系 |
| Son-in-Law | 1911 | Hampton系 |
| Sorcerer | 1796 | Matchem系 |
| Soto | 2000 | Northern Dancer系 |
| Souverain | 1943 | St. Simon系 |
| Sovereign Path | 1956 | Grey Sovereign系 |
| Spanish Prince | 1907 | Pot 8 o's系 |
| Sparkler | 1968 | Pharis系 |
| Speak John | 1958 | Princequillo系 |
| Spearhead | 1913 | Pot 8 o's系 |
| Spearmint | 1903 | Pot 8 o's系 |
| Spectacular Bid | 1976 | Bold Ruler系 |
| Spectrum | 1992 | Red God系 |
| Speculum | 1865 | King Fergus系 |
| Speed | 1891 | Hampton系 |
| Speightstown | 1998 | Mr. Prospector系 |
| Spendthrift | 1876 | Matchem系 |
| Spion Kop | 1917 | Pot 8 o's系 |
| Springfield | 1873 | Pot 8 o's系 |
| Spur | 1913 | Himyar系 |
| Spy Song | 1943 | Himyar系 |
| Squirt | 1732 | Eclipse系 |
| St. Albans | 1857 | Pot 8 o's系 |
| St. Alphage | 1963 | Red God系 |
| St. Angelo | 1889 | King Fergus系 |
| Stalwart | 1901 | Pot 8 o's系 |
| Stalwart | 1979 | Ribot系 |
| Star Appeal | 1970 | Son-in-Law系 |
| Star de Naskra | 1975 | Nasrullah系 |
| Stardust | 1937 | Hyperion系 |
| Star Kingdom | 1946 | Hyperion系 |
| Starlight | 1940 | Hampton系 |
| Star Way | 1977 | Son-in-Law系 |
| State Dinner | 1975 | Tom Fool系 |
| Stefan the Great | 1916 | The Tetrarch系 |
| Stephen Got Even | 1996 | Bold Ruler系 |
| Sterling | 1868 | Pot 8 o's系 |
| St. Frusquin | 1893 | St. Simon系 |
| St. Gatien | 1881 | Pot 8 o's系 |
| St. Germans | 1921 | Swynford系 |
| St. Gris | 1896 | King Fergus系 |
| Sting | 1921 | Himyar系 |
| Stipulate | 1957 | Hurry On系 |
| St. Leger | 1881 | Pot 8 o's系 |
| Stockwell | 1849 | Pot 8 o's系 |
| Stop the Music | 1970 | Hail to Reason系 |
| Storm Bird | 1978 | Northern Dancer系 |
| Storm Cat | 1983 | Storm Bird系 |
| St. Paddy | 1957 | Aureole系 |
| Strawberry Road | 1979 | Nijinsky系 |
| Street Cry | 1998 | Mr. Prospector系 |
| Strolling Along | 1990 | Danzig系 |
| St. Serf | 1887 | St. Simon系 |
| St. Simon | 1881 | King Fergus系 |
| St. Simonmimi | 1894 | St. Simon系 |
| Stutz Blackhawk | 1977 | Mr. Prospector系 |
| Successful Appeal | 1996 | Intent系 |
| Sultan | 1816 | Herod系 |
| Sultry Song | 1988 | Royal Charger系 |
| Summer Squall | 1987 | Storm Bird系 |
| Summertime | 1946 | Hurry On系 | Sunder | 1907 | King Fergus系 |
| Sundridge | 1898 | King Fergus系 |
| Sunglow | 1956 | Teddy系 |
| Sun Again | 1939 | Teddy系 |
| Sunny Boy | 1944 | Teddy系 |
| Sunny's Halo | 1980 | Hail to Reason系 |
| Sunreigh | 1919 | King Fergus系 |
| Sunstar | 1908 | King Fergus系 |
| Sun Teddy | 1933 | Teddy系 |
| Supreme Court | 1948 | Hurry On系 | Supreme Sovereign | 1964 | Sovereign Path系 |
| Surumu | 1974 | Hampton系 |
| Suspender | 1889 | Pot 8 o's系 |
| Swain | 1992 | Red God系 |
| Swaps | 1952 | Khaled系 |
| Sweep | 1907 | Pot 8 o's系 |
| Sweep On | 1916 | Pot 8 o's系 |
| Sword Dancer | 1956 | Teddy系 |
| Swynford | 1907 | Pot 8 o's系 |
| Symington | 1893 | Hampton系 |