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- Saule austrumos (The Sun in the East), for mixed choir (SATBB) - Jāzeps Vītols
- Saules puke (Sunflower), (SAATBB) for mixed choir - Leons Amoliņš
- Saulit` velu vakara (The Sun Sits in a Golden Boat), (SATB) for mixed choir - Viktors Baštiks
- Saulit` velu vakarai (The Sun Departs in a Golden Boat), for mixed choir and piano - Jānis Porietis
- Sazīdieja gaiļapīši (Larkspur Blooming), for male choir (TTBBB) - Andris Vecumnieks
- Scenes from Grimm's Fairy Tales, piano, four hands - Georgs Pelēcis
- Scenes from Hans Andersen's "Snow Queen", piano, four hands - Georgs Pelēcis
- Scenes from Russian Folk Tales, piano, four hands - Georgs Pelēcis
- Scenes from the Arabian Nights story of Ali Baba and the Forty Thieves, for piano four hands -
- Scenes from the Arabian Nights story of Ali Baba and the Forty Thieves, for piano four hands - Georgs Pelēcis
- Scherzino, for bassoon and piano - Romualds Kalsons
- Scherzino, for trumpet and piano - Alvils Altmanis
- Sea Sonata, for clarinet in B and piano - Laura Gustovska
- Second Symphony (Spring Symphony), for string orchestra - Vilnis Šmīdbergs
- Sen nav redzētas zvaigznes... (The Stars have not been Seen for a Long Time), for womens choir - Ansis Sauka
- Sens nacre, for chamber ensemble - Santa Ratniece
- Septiņi mirkļi iz mūžības (Seven Moments from Eternity), for violin and cello - Agris Engelmanis
- Seru marss roza panterai (Funeral March for a Pink Panther), musical parody , for symphony orchestra - Andris Vecumnieks
- Seven Madrigals by e.e.cummings, for mezzo-soprano, clarinet, trumpet, trombone, percussion, alto and cello - Andris Dzenītis
- Shant nadi, Chamber Symphony, for chamber orchestra - Santa Ratniece
- Shine, shine the Sun, (SSAATB) for mixed choir - Ilze Arne
- Si minors (B Minor), cycle, for actors voice and piano - Arturs Maskats
- Sidrabiņa lietiņš lija (The Silvery Rein), for female/children's choir (SSAA) and piano/kokle - Liene Batna (Austrina)
- Signum Magnum, for mixed choir (soli (TTTBBB), quartet I, II (SATB), mixed choir I (SSAATTBB), mixed choir II (SATB)) - Rihards Dubra
- Sinfonia Brevis, for symphony orchestra - Juris Karlsons
- Sing in the Evening, Girls!, (SSAATTBB) for mixed choir - Ilona Rupaine
- Singing, I Stood, for mixed choir (SSAATTBB) - Ēriks Ešenvalds
- Sit at the Table, Lad, (SSAA) for womens choir - Jānis Porietis
- Sitivit anima mea (Midnight Toccata), for organ - Andris Dzenītis
- Sitivit Anima Mea, (una sinfonia da camera), for baritone, English horn, eight cellos and two contrabasses - Rihards Dubra
- Six Little Drummers, for mixed choir (SSAATBB) and percussion - Ēriks Ešenvalds
- Six Trios, for organ - Atis Stepiņš
- Skerco (Scherzo) , for cello - Maija Einfelde
- Skindu, skindu (Riga Castle Resounds), (SATB) for mixed choir - Viktors Baštiks
- So naksninu (On this Night), (SSAATTBB) for mixed choir - Indra Riše
- Soldiers` sorrow, for organ - Helmers Pavasars
- Solitude, for mezzo-soprano and electronics - Andris Dzenītis
- Solo Songs, for voice and piano - Alfrēds Kalniņš
- Solo Songs, collection, for voice and piano - Leonīds Vīgners
- Sonata, for piano - Jānis Porietis
- Sonata, for flute and piano - Leons Amoliņš
- Sonata - Dialogue, for two flutes - Leons Amoliņš
- Sonata ostinato, for piano - Jānis Porietis
- Sonata-Dialogue for two flutes - Leons Amoliņš
- Sonata-Meditation, for viola and piano - Maija Einfelde
- Sonāte (Sonata), for piano - Ilona Breģe
- Song Cycle to Poems by Janis Ziemelnieks, for soli, male choir and piano -
- Song Cycle to Poems by Janis Ziemelnieks, for male choir, mezzo-soprano, bass solo and piano - Māris Lasmanis
- Song festival RĪGA 800, mixed choir and piano -
- Song of the Soul, 2 soli, TTBB and piano - Ēriks Ešenvalds
