| Name | Nationality | Period | Tunes |
|---|
| Saint-Saëns, Camille |  | 1835–1921 | 9 |
| Samarakoon, Ananda |  | 1911–1962 | 1 |
| Samaras, Spyridon |  | 1861–1917 | 1 |
| Samburski, Daniel |  | 1909–1975 | 1 |
| Sammartini, Giuseppe |  | 1695–1750 | 2 |
| Sancho, Ignatius |  | 1729–1780 | 12 |
| Sanderson, James | | 1769–1841 | 1 |
| Sankey, Ira David |  | 1840–1908 | 1 |
| Santos, Jorge A. |  | 1870–1941 | 1 |
| Sanz, Gaspar | | 1640–1710 | 2 |
| Sarti, Giuseppe | | 1729–1802 | 16 |
| Satie, Erik | | 1866–1925 | 9 |
| Scallon, Dana Rosemary |  | 1951— | 1 |
| Scarlatti, Alessandro | | 1660–1725 | 1 |
| Scarlatti, Domenico | | 1685–1757 | 1 |
| Scherer, Johann |  | ? | 12 |
| Schmelzer, Johann Heinrich |  | 1620–1680 | 1 |
| Schubert, Franz | | 1797–1828 | 17 |
| Schubiger, Anselm | | 1815–1888 | 1 |
| Schultze, Johann Christoph | | ? | 25 |
| Schulz, Johann Abraham Peter | | 1747–1800 | 1 |
| Schumann, Robert | | 1810–1856 | 8 |
| Scott, Alicia | | 1810–1900 | 1 |
| Seeger, Pete | | 1919–2014 | 1 |
| Shaw, David T. | | ? | 1 |
| Shield, William | | 1748–1829 | 1 |
| Sibelius, Jean |  | 1865–1957 | 1 |
| Sieczyński, Rudolf | | 1879–1952 | 1 |
| Silcher, Friedrich | | 1789–1860 | 2 |
| Silva, Francisco Manuel da |  | 1795–1865 | 1 |
| Silva, Pattápio | | 1880–1907 | 1 |
| Sindici, Oreste | | 1828–1904 | 1 |
| Skinner, James Scott | | 1843–1927 | 14 |
| Smart, Henry Thomas | | 1813–1879 | 1 |
| Smetana, Bedřich |  | 1824–1884 | 1 |
| Sontonga, Enoch |  | 1873–1905 | 1 |
| Sor, Fernando | | 1778–1839 | 2 |
| Sousa, John Philip | | 1854–1932 | 13 |
| Spilman, Jonathan Edwards | | 1812–1896 | 1 |
| Spofforth, Reginald | | 1769–1827 | 1 |
| Stafford Smith, John | | 1750–1836 | 2 |
| Stamitz, Anton | | 1750–? | 8 |
| Stamitz, Carl | | 1745–1801 | 11 |
| Stanley, John | | 1712–1786 | 1 |
| Staunton, William Jr. | | ? | 1 |
| Steffe, William | | 1830–1890 | 1 |
| Stevens, Cat | | 1948— | 1 |
| Stevenson, John | | 1761–1833 | 3 |
| Stevenson, John Andrew | | 1761–1833 | 1 |
| Stewart, Andy M. | | 1952–2015 | 1 |
| Stölzel, Gottfried Heinrich | | 1690–1749 | 1 |
| Strauss, Johann I | | 1804–1849 | 1 |
| Strauss, Johann II | | 1825–1899 | 5 |
| Strauss, Richard | | 1864–1949 | 1 |
| Sudhakaran, Pranav | | 2008— | 2 |
| Sullivan, Arthur | | 1842–1900 | 11 |
| Suppé, Franz von | | 1819–1895 | 1 |
| Susato, Tielman |  | 1510–1570 | 1 |
| Svendsen, Johan |  | 1840–1911 | 1 |
| Sweney, John Robson | | 1837–1899 | 1 |