This is a list of aircraft in alphabetical order beginning with 'Co' through to 'Cz'.
(Co-Z Development Co, Mesa, AZ)
(Coavio srl, Ferentino, Italy)
(Cobalt Aircraft industries, Airparc 6C,Avenue de l'Europe, 78117 Toussous le-Noble)
(Cobra Aviation)
(Cockatoo Dockyard & Engineering Co)
(C C Coddington & Magnum Webb, Charlotte, NC)
(Frank Coffyn, Knoxville, TN)
((Sam H) Coffman-(C R) Strong Aircraft Co)
(Luigi Colani / Colani/Composite Engineering (CCE))
(Milton Colden, Clintonville, WI)
(Cole School of Aviation/Cole Aircraft Corp, 3617 Euclid Ave, Cleveland, OH)
(Ross A Cole, Dallas, TX)
(J Raymond Cole, Oklahoma City, OK)
(L J Coleman, Sioux City, IA)
(1940: (Gilbert) Colgate-(Victor A) Larsen Aircraft Co, Amityville, NY)
(Maurice Collard, Jacques Souquet & Jacques Raniéri)
((William S) Collier Aircraft Sales, Tulsa, OK)
((William S) Collier & (L A) Combs Aircraft Co, Ponca City, OK)
(DeWitt Collins, Winthrop, IA)
(Collins Radio Co, Marine Lab, Cedar Rapids, IL)
(Collins Aero, Chadds Ford, PA)
(1946: Colonial Aircraft Corp (Fdr: David B Thurston), Huntington Station, Long Island, NY, 1955: Moved to Sanford, ME (Pres: Herbert Lindblad), 1959: Acquired by Lake Aircraft Corp.)
((Willis C) Brown-(Richard) Young a.k.a. Columbia Aircraft Co.)
(Columbia Air Liners Inc (Fdr: Charles A Levine), Hempstead (Valley Stream), NY. Seen as a division of Grumman during WW2, but if this was fact, substantiation was not found. 1946: Acquired by Commonwealth Aircraft Corp.
(Colyaer SL, Portonovo, Spain)
(Combs Aircraft Corp, Combs Field, Denver, CO)
(Command-Aire Inc / Arkansas Aircraft Company, Little Rock, AR)
(Commander Aircraft Co)
(Commercial Aircraft Corp, Metropolitan Airport, Van Nuys, CA)
(1943: Commonwealth Aircraft Co, Kansas City, KS, reorganized from Rearwin Co to build assault gliders, 1949: Valley Stream, NY)
(Commuter Aircraft Corp, Youngstown, OH)
(Aerocomp Inc, Merritt Island, FL / Comp Air)
(Compagnie Française d'Aviation â C.F.A. â Division of Salmson)
(Compcop Inc (Pres: Stephen Geraghty), Redwood City, CA)
(see Fane for Comper Fane, which was started by Nick Comper and finished by Gerard Fane)
(Composite Aircraft Corporation)
(Rollo L Compton, San Antonio, TX)
(David Comstock, Roundup, MT)
(Flugzeugbau A. Comte / Robert Wild)
(Con D Ellingston & Earl E Hansen, Great Falls, MT)
(Knoxville, TN)
(Pouance, France)
(Clifford Condit, Partridge, IL)
(Condor Aero Inc.)
(Condor Aircraft)
(Condry & (Lawrence) Stephen, San Jose, CA)
(Daytona Beach, FL)
(Clifford Condit & Gus Palmquist, Milwaukee, WI)
(Ronald Conrad, Earl Player, Jack Buttons, Salt Lake City, UT)
(Roland Conrad, Salt Lake, UT)
(Conroy aircraft / Jack Conroy)
(for later types see Convair)
(Cristea Constantinescu)
(Contender Aircraft Co, Sunnyvale, CA)
(Continental Aircraft & Transportation Corp (pres: Fred Leinweber), Phoenix, AZ)
(1929: Continental Aircraft Co, 704 E Douglas, Wichita, KS)
(1912: Continental Aircraft Corp (pres: Hugh Copeland), Amityville, NY)
(Continental Aviation Corp (founders: M W Giddings and E R Willard), Boeing Field, Seattle, WA, 6/26/31: company into receivership)
(Continental Motors Company, Muskegon and Detroit, MI)
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(Convertawings Inc, Long Island, NY)
(Leon M Cook, Pampa, TX)
((John) Cook Aircraft Corp, Torrance, CA)
(Weldon B Cooke, Pittsburg, CA, 1913: Sandusky, OH)
(G Carlyle Cooke, Winston-Salem, NC)
(Sam Cooke)
(John F Cooley Aerial Navigation Co, Rochester, NY)
(Cooley & Stroben, Woodlake, CA)
(Thomas A Cooney, Indianapolis, IN)
(Harold D Coonley, Miami, FL)
(John D Cooper Aeroplane Co, Bridgeport, CT)
(J B Cooper, Bridgeton, MO)
(Georges Copin)
(Harry Depew Copland, Detroit, MI)
(Corben Sport Plane & Supply Co, Peru, IN and Madison, WI)
(John Corby)
(R Stanley Corcoran Co, New Lenox, IL)
(Aircraft Development Div, (Erret L) Cord Mfg Co, Glendale, CA)
(Harry Cordy, Los Angeles, CA)
(Italy)
(Corman (Erret L Cord & Lucius B Manning) Aircraft Co, Dayton, OH)
(1930: (George Wilbur) Cornelius Aircraft Co, Glendale, CA, c.1935: Van Nuys, CA, c.1940: Dayton, OH, 1941: Cornelius-Hoepli Co.)
(Paul Cornu)
(Corvus Hungary LLC)
(Joseph Coser & John Oonk, St Louis, MO)
(Cosmic Aircraft Corp, Bridgeport, CT)
(Southam, United Kingdom)
(Fontaine-lès-Dijon, France)
(L. Coubash)
(Leonard Eaves, Oklahoma City, OK)
(Coulaud)
(Jacques Coupé)
(Courier Monoplane Co)
(Jean-Claude Courtès)
(Société Anonyme d'Applications Industrielles du Bois)
(Société de Constructions Navales du Léman de Thonon-Les Bains)
(Coutou)
(Germain Couyaud)
(Société des Avions René Couzinet / René Couzinet)
(Cove Biplane Co)
(Ken S. Coward)
(Joseph A Cox, 107 S Shield St, Knox, IN, 1928: Starke County Aviation Club.)
(Chantiers de Provence Aviation)
(Craft Aerotech, Missoula, MT)
(James A Crane, Ellsworth ME.)
(Cranwell Light Aeroplane Club, United Kingdom)
((Harvey J) Crawford, Puyallup, WA)
(Crawford All-Metal Airplane Co Inc, Los Angeles, CA)
(see CANT)
(Guaymaral, Colombia)
(Francis B Crocker and Peter Cooper-Hewitt)
(Alain Croisé)
(1912: (C D) Cromley Multiplane Co, Reno, NV)
(Forrest E Cromwell, Wetmore, KS)
(Harry Crosby, Burbank, CA)
(Emilien Croses)
(1929: (Powel) Crosley Aircraft Mfg Div, Crosley Radio & Electronics Co, Sharonville, OH)
((Dr Walter M) Cross-(Jack E) Foster Aircraft Corp, Kansas City, MO)
(Aviation Construction Engr Co, Chicago, IL)
(1931: (R J Goodman) Crouch-(Harold) Bolas, 21 Campbell St, Pawtucket, RI)
(Hugh Crowder)
((W G) Dunn Mfg Co, Clarinda, IA)
(Crumley Multiplane Co.)
(Thomas Charles Crump, Grand Rapids, MI)
(Crusader Aircraft Corporation)
(Czech Sport Aircraft formerly CZAW)
(CSC Aircraft Company)
(Council for Scientific and Industrial Research)
(Commonwealth Scientific and Industrial Research Organisation)
(Centralne Studium Samolotów â Central Aircraft Studies)
(Centro Técnico Aeroespacial)
(Herberts Cukurs) â Latvia
(Culp's Specialties, Shreveport, LA)
(Charles R Culver, Springfield, MA)
(Lagar R Culver, Farmington, UT)
(Culver Aircraft Company)
((Grant S) Cunning Aircraft, Clearfield, UT)
((Francis E) Cunningham-(Randolph F) Hall Aircraft Corp)
(J.R.Currie)
(Curti Aerospace)
(Curtis A Wright Aeronautical Corp. (unrelated to Curtiss-Wright Corp. - note spelling))
(Curtiss Aeroplane and Motor Company)
(assigned retroactively in 1935, with 75 being first contemporary use of system)
Curtiss-Wright, (not to be confused with Curtis Wright)
(1939: National Aircraft Corp (Fdr: Willard R Custer), Hagerstown, MD, 1951: Construction by Baumann Aircraft Corp, Santa Barbara, CA)
(Custom Flight Limited, Midland, Ontario, Canada)
(Roland Cuvellier, Léon Lacroix)
(Michigan Steel Boat Co, Detroit, MI)
(Centro Volo a Vela del Politecnico di Milano / Centro Studi ad Ezperienze per il Volo a Vela)
(CW Helicopter Research)
(C.W. Aircraft Ltd.)
(Centralne Warsztaty Lotnicze â Central Aviation Workshops)
(Cyclone Airsports Ltd)
(Cycloplane Co Ltd (founders: H S "Dick" Myhres, Omer L Woodson), 3781 Angeles Mesa Dr, Los Angeles, CA)
(Zaharoff Aeronautical Corp of America, 55 W 42 St, New York, NY)
(Czechoslovakia, late 40s â early 50s)
(Czech Sport Aircraft)