| So-A-Tone Salon Orchestra | 1930 | 7 | Musical group | |
| So-A-Tone String Quartette | 1930 | 6 | Musical group | |
| Soap Box Whittlers | 1929 | 2 | Musical group | |
| Soares | 1931 | 2 | vocalist, composer | |
| Soares, Antão | 1940 | 1 | clarinet | |
| Soares, Jota | 1937 - 1938 | 2 | songwriter | |
| Soares, Macedo | 1933 | 1 | songwriter | |
| Soares, Raul | 1910 | 1 | vocalist | |
| Soares, Rubens | 1936 - 1952 | 16 | composer, songwriter | |
| Sobarzo, Edward | 1916 | 8 | leader, composer | |
| Sobejano, Carmen | 1923 | 2 | speaker | |
| Sobejano, [?], Srta. | 1905 | 1 | soprano vocal | |
| Sobel, Phil | 1958 | 4 | alto saxophone | |
| Sobel, Philip | 1957 | 12 | reeds | |
| Soberano, Luiz | 1941 | 1 | composer, songwriter | |
| Sobolenski, Stephen. See: Sobolewski, Stephen | | | See reference | |
| Sobolewski, Stephen | 1926 - 1927 | 3 | baritone vocal | |
| Soboski, Stan | 1925 | 4 | tuba | |
| Sobrera, Sérgio | 1930 | 1 | songwriter | |
| Sobrinho, Francisco Ponzio | 1925 | 1 | composer | |
| Sobstvennyi Dukhovnyi Orkestr Grammofon | 1909 | 2 | Musical group | |
| Sobstvennyi Orkestr Zonofon | 1911 | 1 | Musical group | |
| Soby, Walter U. | 1929 | 1 | songwriter | |
| Socarrás and his Orchestra | 1958 | 13 | Musical group | |
| Socarrás Estacio, Alberto. See: Socarrás, Alberto | | | See reference | |
| Socarrás, Alberto | 1928 - 1957 | 62 | flute, leader, composer, saxophone, director, alto saxophone, performer, clarinet, arranger, lyricist | |
| Socarras, Jose | 1946 | 8 | maracas | |
| Socarras, José "Chepín" | 1932 | 6 | guitar, vocalist | |
| Socarrás, José "Chiquito". See: Chiquito | | | See reference | |
| Socci, Charles | 1932 | 3 | vocalist | |
| Sociedad Coral de Bilbao | 1929 | 4 | Vocal group | |
| Sociedid Coral Polifónica de Pontevedre | 1928 | 4 | Vocal group | |
| Societa Corale "Ponchielli" | 1912 | 2 | Vocal group | |
| Società Corale Adriese | 1926 - 1928 | 6 | Vocal group | |
| Società Corale G. Verdi di Milano | 1941 | 1 | Vocal group | |
| Società Corale "La Patria" | 1915 | 6 | Vocal group | |
| Societe des Cineromans Films | 1928 | 2 | Musical group | |
| Societe des Concerts du Conservatoire de Paris. See: Paris Conservatory Symphony Orchestra | | | See reference | |
| Société des concerts du Conservatoire Orchestre | 1918 - 1941 | 122 | Musical group | |
| Société Royale "La Légia" de Liège | 1929 | 2 | Vocal group | |
| Society Serenaders | 1924 | 4 | Musical group | |
| Society Syncopators of Hotchkiss | | | Musical group | |
| Société des instruments anciens | 1917 - 1931 | 13 | Musical group | |
| Socio, Roberto de. See: de Socio, Robert | | | See reference | |
| Socolow, Frank | 1945 - 1959 | 76 | tenor saxophone, alto saxophone, reeds | |
| Sodeika, Anthony | 1918 - 1920 | 11 | baritone vocal, composer | |
| Söderberg, W. Th. | 1916 - 1939 | 9 | composer | |
| Söderblom, Åke | 1938 - 1939 | 5 | songwriter, lyricist, vocalist | |
| Söderblom, I. | 1917 - 1919 | 2 | composer | |
| Söderblom, Nathan | | | author | |
