Sergey Sosnovsky (1981) – a ballet dancer, teacher and choreographer. >>

Alexander Sotin (1852–1904) – a famous doctor, the first director of the sulfur water resort in Kemeri (Jūrmala). >>

Yury Spigin (1949) – a piano player, Doctor of Pedagogics (2012). >>

Ludmila Sproge (1953) – professor, from 2002 Head of the Department of Russian and Slav languages of the faculty of Humanitarian Sciences of the University of Latvia. >>

Sergia (secular name Nina  Sachavo; 1960–2019) –   a rural dean of the Riga Holy Trinity-St. Sergius Convent from 1992 to 2019. of the Riga Holy Trinity-St. Sergius Convent from 1992 to 2019. of the Riga Holy Trinity-St. Sergius Convent from 1992 to 2019. >>

Nina Stradinya (latv. Stradiņa, née Malysheva; 1897–1991) –a physiotherapist, founder of the physiotherapy department of the Republican Clinical Hospital, wife of its chief physician Pauls Stradinš, mother of academician Jānis Stradinš. >>

Alexander Starkov (1955) – a former Latvian football player and coach. >>

Arseny Starkov (1874–1927)  – professor of Medical faculty of the University of Latvia from 1925 to 1927. >>

Alexander Stepanov (1886–1972) – a sworn advocate, teacher. >>

Vladimir Petrovich Steshenko (1944) – a journalist, public figure. >>