Vladimir Shestakov (1938) – Professor, Habilitated Doctor of Engineering (Dr. habil. sc. ing.), specialist in the field of aviation machinery, history of aviation in Latvia. >>
Stephen (Stepan) Shimansky (1867-1931) – professor of technological chemistry of Riga Polytechnical Institute, eminent specialist of the field of the technology of paints, Director of the Riga Russian Technical College >>
Dmitry Shirin (1932) – Candidate of Economic Sciences, Docent of the Riga Polytechnic Istitute (from 1990 – Riga Technical University). >>
Valentina Shislyannikova (1918-1979) – Candidate of Physics and Mathematics, Docent of the Riga Polytechnic Institute. >>
Alexander Shostak (1948–2024) – Latvian mathematician, professor and academician, a world-famous scientist. >>
Leo Sidyakov (1932-2006) – professor, Pushkin scholar. >>
Yuri Sidyakov (1953) – Doctor of Philology, Associate Professor of the Slavic Department of the University of Latvia. >>
Igor Sikorsky (1889-1972) – a founder of Russian aircraft construction, aircraft constructor in Russo-Balt, then became a distinguished American helicopter builder. >>
Vasily Sinaisky (1876–1949) – professor of the University of Latvia from 1922 to 1944, where he read lectures on Civil law. >>
Tatjana Sjakste (1953-2016) – Doctor of Biology (Dr. biol.), leading researcher at the Institute of Biology of the University of Latvia. >>