Ludmila Sergeyeva (1941) – Doctor of Engineering (Dr. sc. ing.), associate professor of the Riga Technical University. >>

Sergius (Voskresensky; 1897–1944) –  Metropolitan of Vilnius and Lithuania and Exarch of  Latvia and Estonia. >>

Fyodor Serkov (1883–1962) –  a teacher,  from 191 to 1915 co-owner of the Private School in Riga. In 1924–1925 – Head of the Russian Division of the Department of National Minorities of the Ministry of Education of the Republic of Latvia. >>

Vladimir Surovtsev (1865-1900) – a general, governor of the Livonia Governorate. >>

Alexander Serzhant (1953) –  an artist. >>

Anastasiya Sevastova (1990) – Latvian tennis-player. >>

 Nikolay Sevastyanov (1919-1994) – Doctor of Technical sciences, professor, an expert in the field of aeronautical automatics and computer technology. >>

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Pavel Seversky (Siversky; 1875-1943) – a Colonel of the Russian army. Member of the Society of Russian Emigrants in Latvia. Employee of the Riga City Council. >>

Natalya Sevidova (1955) – a journalist. >>