S
- Saʿdī, Persian poet (1959)
- Boris Safonov, aviator (1944)
- Andrei Sakharov, scientist and Nobel peace prize winner (1991)
- M. V. Sakharov, Marshal of the Soviet Union (1898–1972), issue 1978
- Toktogul Satylganov, Kyrgyz poet (1964)
- Mikhail Saltykov-Shchedrin, Russian writer (1956, 1976)
- William Saroyan, Armenian-American writer (1991)
- Viktor Savinykh, cosmonaut (1981)
- Svetlana Savitskaya, cosmonaut (1983)
- Konstantin Savitsky, Russian painter (1955)
- Sayat-Nova, Armenian musician and poet (1962)
- Friedrich Schiller, German poet (1955)
- Pavel Schilling, Russian inventor (1982)
- Otto Schmidt, astronomer and Artctic explorer (1966, 1980)
- Robert Schumann, German composer (1960)
- Ivan Sechenov, Russian physiologist (1956)
- Georgy Sedov, Russian Arctic explorer (1952, 1977)
- Valentin Serov, Russian painter (1965)
- Pyotr Semyonov-Tyan-Shansky, Russian geographer (1952)
- Dmitry Senyavin, Russian admiral (1987)
- Fyodor Sergeyev, revolutionary (1963)
- Saken Seyfullin, Kazakh writer (1964)
- Ivan Shadr, sculptor (1962)
- Stepan Shahumyan, revolutionary (1933, 1968, 1978)
- Marietta Shaginyan, writer (1988)
- William Shakespeare, English playwright (1964)
- Boris Shaposhnikov, Marshal of the Soviet Union (1982)
- Mikhail Shatelen, electrical engineer (1966)
- Mikhail Shchepkin, Russian actor (1963)
- Nikolay Shchors, revolutionary (1948)
- Boris Shchukin, actor (1971)
- Grigory Shelikhov, Russian Alaska settler (1991)
- Taras Shevchenko, Ukrainian poet and painter (1939, 1957, 1961, 1964, 1967, 1989)
- Lyubov Shevtsova, anti-Nazi underground activist (1944)
- Minay Shmyryov, World War II partisan (1967)
- Yuly Shokalsky, oceanologist and geographer (1956)
- Mikhail Sholokhov, writer (1985, 1990)
- Pavel Shternberg, astronomer and revolutionary (1965)
- Fedot Shubin, Russian sculptor (1955)
- Vladimir Shukhov, structural engineer (1963)
- Nikolay Shvernik, politician (1988)
- Stasys Šimkus, Lithuanian composer (1987)
- Ruben Simonov, actor (1971)
- Francysk Skaryna, Belarusian printer (1988)
- Nikolay Sklifosovsky, Russian physician (1961)
- Leonid Sobinov, opera singer (1972)
- Vasily Sokolovsky, Marshal of the Soviet Union (1977)
- Alexander Solovyov, Russian historian (1991)
- Vladimir Solovyov, cosmonaut (1985)
- Mikhail Somov, oceanologist (1980)
- Richard Sorge, intelligence agent (1965)
- Grigory Spiridov, Russian admiral (1987)
- Gennady Strekalov, cosmonaut (1981)
- Joseph Stalin, (1943–1954)
- Suleyman Stalsky, Lezgin poet (1969)
- Yelena Stasova, revolutionary (1973)
- Filipp Strelets, World War II partisan (1966)
- Vasily Struve, Russian astronomer (1954, 1964)
- Damdin Sükhbaatar, Mongolian revolutionary (1983)
- Sun Yat-sen, Chinese revolutionary (1966, 1986)
- Gabriel Sundukyan, Armenian playwright (1950)
- Vasily Surikov, Russian painter (1941, 1948)
- Alexander Suvorov, Russian generalissimus (1941, 1950, 1962, 1980)
- Yakov Sverdlov, revolutionary (1934, 1960, 1965, 1975, 1985)
- Fedot Sychkov, painter (1970)
Read more about this topic: List Of People On Stamps Of The Union Of Soviet Socialist Republics