- SS501 -- SSK
- SSL 9000 -- ST
- S.T. -- St. Cecelia Symphony Orchestra
- St. Cecilia -- St. Deluxe
- St Diary -- St. George's Chapel Choir, Windsor Castle
- St. Germain -- St. James Harp Ensemble
- St. James Stars -- St. John's Russian Orthodox Choir
- St. Joseph -- St. Louis African Chorus
- St. Louis Bessie -- St. Mars
- St. Martin -- St. Panteleimon Choir
- St. Paradise -- St. Petersburg Chamber Choir
- St. Petersburg Chamber Choir -- St. Petersburg TV And Radio Company Orchestra
- St. Petillo -- St-Saoul