(Fritz Raab) (Antonius Raab – Estonia) (Raab-Katzenstein Flugzeugwerk GmbH (RaKa) – Antonius RAAB & Kurt KATZENSTEIN) (William Rackett, Byron Center, MI) (Kidlington, United Kingdom) (Reginald Denny Hobby Shops / Radioplane) (Aero Club of the Royal aircraft Establishment) (Henri & Louis Ragot, Adrien Lacroix, New York NY.)
(Rainbow Aircraft, Edenvale, Gauteng, South Africa) (Part of Leading Edge Air Foils, Peyton Colorado) (Paul F. Ralph) (Ramor Flugzeugbau / Albert Kalkert) (Ramphos Inc, Fontanafredda, Italy) (W H Ramsey, Minneapolis MN.)
(Ranger Aircraft Corp, Oklahoma City) ((John G "Tex") Rankin School of Flying/Rankin System; Portland OR.)
(Raven Aircraft Corporation, Surrey, British Columbia, Canada) (Raven Rotorcraft) (SA Ravin Aircraft, Pretoria, South Africa) ((Alanson "Dutch," Gene, Herb) Rawdon Bros Aircraft Co, Wichita) (Herb Rayner) (RBVZ Russko-Baltiisky Vagon Zavod – Russo-Baltic wagon works) (David B Read, Oshkosh WI.)
(Hoppers Crossing, Victoria, Australia) (Walter "Wimpy" W. Redfern, Post Falls, Idaho, United States) (Paul Reece, Brownstown IL.)
(Officine Meccaniche "Reggiane" S.A.) (Carlos Régnier) (Donald (or Walter) E Reid, Ashbury Park NJ.)
(Revolution Helicopter Corp Inc (pres: Dennis Fetters), Excelsior Springs MO.)
(Rhein Flugzeugbau GmbH) (Germany) (Fliegerschule Rheinland) (Charles Rhoades, Lock Haven PA) (Rhodes Berry Co, Los Angeles CA.)
((A S) Richardson Aeroplane Corp Inc, Lowell MA) (Richmond Airways Inc, Greenridge (Staten Island) NY.)
(Keith Rider, San Francisco CA) (Walter Rieseler at Berlin-Johannistal) (Ariel Ciro Rietti) (Paul Rigault) (Maurice & Paul rigault & Jacques Deproux) (Eugene Augustus "Gus" Riggs, Terre Haute IN; 1913: add Lloyd Wehr; c.1913: add Elling O Weeks.)
(Dan Rihn, United States) (Theron G Riley (aero engr), 923-925 Mary St, Flint MI.)
((Charles Norvin) Rinek Mfg Co, Easton PA.) (René Riout) ((Russell) Riter Engineering Corp, Deerfield IL.)
((Charles & Harry) Rocheville Aircraft Corp Ltd/Rocheville Ltd, 3510 Percy St, Los Angeles CA.)
(Aviation Div, Rock Island Oil & Refining Co Inc, Hutchinson KS) (Rocket Aircraft Corporation) (B F Roehrig, San Diego CA.)
(Prva Srpska Fabrika Aeroplana Zivojin Rogožarski A.D.) (Oscar A Rohner, Aurora CO.) ((Fred H) Rohr Aircraft Corp, Chula Vista CA.)
(Chantiers Aéronavales Etienne Romano) (Aeroplani Romeo, Napoli) (The aircraft branch of Alfa-Romeo, built at Meridionali – IMAM – Industrie Meccaniche e Aeronautiche Meridonali) (L F Root, Compton CA.)
(Camposanto, Italy) (Oliver Andre Rosto (Ole Augustinussen Røstø), Duluth MN.)
(Rotorschmiede GmbH) (Görisried, Allgäu, Germany) (RotorWay (pres: John Netherwood), 4140 W Mercury Way, Chandler AZ.
(76th Fighter Squadron Inc, Meadow Lake Airport, Colorado, United States) (Guy Roy) (Royal Aircraft Factory, Garden City NY.)
(Ronchetti Razzetti Aviación SA) (Reconstructions Répliques Avions Anciens) (RRG – Rhön-Rossitten Gesellschaft – Rhön-Rossitten Society) (Ernő Rubik – father of the Rubik's Cube inventor (Zdenek Rublich, Zdenek Hlavkov & Karl Tomasov / Orlican Chocen factory) (Jerzy Rudlicki) (Ruffy, Arnell and Baumann Aviation Company / Felix Ruffy and Edouard Baumann / Ruffy and Richard Sayer Arnell from 1917) (Ruhrtaler Maschinenfabrik Schwarz und Dyckerhoff) (Harry B Rummell, Findlay OH.)