S. N. Bose
Discovery : Boson

Salk
Discovery : Salk Vaccine

Samuel Colt
Discovery : Revolver

Samuel Morse
Discovery : Telegraph

Samuel Morse
Discovery : Telegraphic Code

Shalimar
Discovery : Paints

Sigmund Freud
Discovery : Psychology Of The Unconscious

Sir Alexander Graham Bell
Discovery : Telephone

Sir Charles Parsons
Discovery : Ship (Turbine)

Sir Ernest Swington
Discovery : Tank

Sir Frank Whittle
Discovery : Jet Engine

Sir George Caley
Discovery : Glider

Sir Humphrey Davy
Discovery : Safety Lamp

Sir Isaac Pitman
Discovery : Shorthand

Sir J.A. Fleming
Discovery : Valve Of Radio

Sir Richard Arkwight
Discovery : Spinning Frame

Stephen Hawking
Discovery : Quantum Cosmology

Stephenson
Discovery : Railway Engine

Safety lamp : Sir Humphrey Davy
Safety Pin : William Hurst
Safety Razor King : C. Gillette
Salk Vaccine : Salk
Saxophone : Antoine Joseph Sax
Scientific astronomy : Hippalus
Scientific Thinking : Lucretius
Scooter : G. Bradshaw
Seismograph : Roberts Mallet
Sewing Machine : Thomas Saint
Sextant : Hadley
Ship (steam) : J.C. Perier
Ship (turbine) : Sir Charles Parsons
Shorthand : Sir Isaac Pitman
Sociobiology : Edward O. Wilson
Solar System : Copernicus (1540)
South Pole : Amundson (1912)
Soviet Genetics : Trofim Lysenko
Space flying : Braun, Dr.Wernher Von
Specific Gravity : Archimedes
Spectroscope : Bunsen
Spectroscopy : Gustav Kirchhoff
Spinning frame : Sir Richard Arkwight
Spinning jenny : James Hargreaves
Stainless Steel : Harry Brearley
Steam boat : Fulton
Steam engine (condenser) : James Watt
Steam engine (piston) : Thomas Newcome
Steam Engine : James Watt
Steam Turbine : Parsons
Steel Melting Process : Bessemer
Steel production : Henry Bessemer
Stethoscope : Dr. William Stokes, Rene Laennec
Stress Concept : Hans Selye
Structural Anthropology : Claude Levi-Strauss
Structure of DNA : James Watson
Structure of the Atom : Ernest Rutherford
Submarine : David Bushnell
Sulpha Drugs : Domagk
Superconductivity : Heike Kamerlingh
Symbiosis Theory : Lynn Margulis
Symbol : William Oughtred