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- scattering, particle
- Schelling, Friedrich
- Schenirer, Sarah
- Schimmel, Annemarie
- Schism: An Overview
- Schism: Christian Schism
- Schlegel, Friedrich
- Schleiermacher, Friedrich
- Schlesinger, Arthur Meier, Jr
- Schneerson, Menachem M.
- Scholarios, Gennadios
- Scholem, Gershom
- Schumacher, Ernst Friedrich (1911 – 1977) German/English Economist
- Schweitzer, Albert (1875 – 1965) German Theologian, Musicologist, Philosopher, and Physician
- Scientific and Technical Understanding of Energy
- Scientific Committee on Problems of the Environment
- Scientists' Institute for Public Information
- Scilly, Isles of
- Scombroidei (Barracudas, Tunas, Marlins, and Relatives)