This is a list of aircraft in alphabetical order beginning with 'S'.
(Hodonin, Czech Republic)
(Société Pour l'Aviation et ses Dérivés)for post 1917 designs, see: Blériot
((John Nicholas) Sparling Propeller & Aeroplane Factory, E St Louis, MO)
(W W Sparrow, Healdron, OK)
(UK)
(Spartan Aircraft Co, Tulsa, OK)
(Société Provençale de Construction Aéronautique)
(Sam Spearman, Dunkirk, OH)
(Specialized Aircraft Co (pres: Jack Coroy), Camarillo, CA)
(Bancroft, Idaho, United States)
(Spectrum Aircraft Corps, Van Nuys Airport, CA)
(Spectrum Aircraft Inc)
(Spectrum Aeronautical)
(Robert E Speed and Ronald Johnson)
(Speed Bird Corp (Perth Amboy Title Co), Keyport, NJ)
(Speedtwin Developments Ltd)
(Herbert Spencer)
(Percy H Spencer, Farmingdale, NY)
((Percy H) Spencer-(Victor A) Larsen Aircraft Co, Farmingdale, NY)
(Bristol, UK)
(Lawrence Sperry Aircraft Co, Farmingdale, NY)
(Tony & Dorothy Spezio, Bethany, OK)
((Siegmund) Spier Aircraft Corp, Jersey City, New Jersey;)
(Spijker, from 1915 the Nederlands Automobile and Aeroplane Co.)
(Spike Aerospace)
(M H Spinks Sr, Ft Worth, TX)
(Spitfire Helicopter Co, Media, PA)
(Capena, Italy)
(Sport Flight Aviation)
(Sport Racer Inc., Valley Center, Kansas, United States)
(Spotsy Aircraft Corp (Victor Gottchling & Emil W Pwters), 4109 Germaine Ave, Cleveland, OH)
(George Spratt / Spratt Aircraft Inc, Costesville, PA)
(William J. Spring, Burlington, Ontario, Canada)
(Springfield School of Aviation, Springfield, OR)
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