This is a list of aircraft in alphabetical order by manufacturer which begin with "I".
IABSA
(Industria Aeronáutica Brasileira SA)
IAC
(International Aeromarine Corporation)
IAE
(Institute of Aerospace Engineering - Vsoké Učeni Techniké Brně - (Brno University of Technology))
(Instituto Aerotécnico)
- known as Ae (from "Dirección General de Aerotécnica") 1927–1936, "Fábrica Militar de Aviones" (FMA) 1938–1943, I.Ae (for "Instituto Aerotécnico") 1943–1952, and IA from 1952 to 2007.
(Israeli Aircraft Industries)
(Iran Aircraft Manufacturing Industrial Company)
Iannotta
(Orlando Iannotta later Voliamo)
(Iran Aviation Industries Organization)
(Ibis Aircraft SA, Cali, Colombia)
(Întreprinderea de Construcții Aeronautice - Brașov)
(Întreprinderea de Construcții Aeronautice Românești)
Icarus Foundation
(Bucharest, Romania)
Ichimori
(Yoshinori Ichimori)
- Ichimori 1919 Monocoque Aeroplane[8]
- Ichimori Skylark[8]
- Ichimori Tractor[8]
(Icon Aircraft (founders: Kirk Hawkins, Steen Strand), Los Angeles, CA)
(Castelnuovo Don Bosco, Italy)
ICRMA
(Întreprinderea de Reparat Material Aeronautic)
Idea Aircraft
(Idea Aircraft Company, Miskolc, Hungary)
IFB Stuttgart
(Universität Stuttgart - Institut für Flugzeugbau )
IFIL
(Întreprinderea Forestieră de Industrializare a Lemnului - Reghin)
- IFIL RM-1 - (Vladimiir Nowițchi)[4]
- IFIL RG-1 - (Vladimiir Nowițchi)
- IFIL RG-2 - (Vladimiir Nowițchi)[4]
- IFIL RG-3 - (Vladimiir Nowițchi)[4]
- IFIL RG-4 Pionier - (Vladimiir Nowițchi)[4]
- IFIL RG-5 Pescăruș - (Vladimiir Nowițchi)
- IFIL RG-6 - (Vladimiir Nowițchi)
IFTHB
(Institut für Flugzeugbau an der Technischen Hochschule Braunschweig)
- Braunschweig Zaunkönig[9]
IIL
(Întreprinderea de Industrie Locală - Ghimbav)
IK
(Ilmailuinsinöörien Kerho - Aeronautical Engineers Club)
(Tvornica Aero i Hydroplana Ikarus - Ikarus aeroplane and hydroplane factory)
(Ikarus Drachen Thomas Pellicci, Stephanskirchen, Germany)
Ilmailuinsinöörien Kerho
(Club of Aeronautical Engineers)
- Ilyushin BSh-2 initial prototype for the Il-2
- Ilyushin DB-3 long-range bomber
- Ilyushin DB-4 prototype long-range bomber
- Ilyushin I-21 prototype single engine, single-seat fighter
- Ilyushin MSh[11]
- Ilyushin Il-1 prototype armored fighter
- Ilyushin Il-2 ground attack aircraft
- Ilyushin Il-4 bomber/torpedo bomber developed from the DB-3
- Ilyushin Il-6 ground attack aircraft project developed from the Il-2; cancelled due to the Il-8 and Il-10
- Ilyushin Il-8 ground attack aircraft prototype developed from the Il-2; intended Il-2 replacement
- Ilyushin Il-10 two-seat ground attack aircraft developed from the Il-1
- Ilyushin Il-12 twin-engine cargo/military transport aircraft
- Ilyushin Il-14 high-speed bomber project
- Ilyushin Il-14 twin engine airliner/military transport aircraft
- Ilyushin Il-16[11] ground attack aircraft prototype developed from the Il-10
- Ilyushin Il-16[11] four-engine jet airliner, resembled the Tu-110; cancelled due to the Tu-104
- Ilyushin Il-18 prototype four-engine airliner
- Ilyushin Il-18 four-engine turboprop airliner
- Ilyushin Il-20 ground attack prototype, intended as a Il-10 replacement
- Ilyushin Il-20 ELINT/radar reconnaissance version of Il-18
- Ilyushin Il-22 jet bomber prototype
- Ilyushin Il-22 airborne command post version of Il-18
- Ilyushin Il-24[11] prototype four-engine jet bomber
- Ilyushin Il-24 twin-engine jet bomber; derivative of Il-22
- Ilyushin Il-24 ice reconnaissance aircraft
- Ilyushin Il-26 long-range bomber project
- Ilyushin Il-28 medium bomber/trainer
- Ilyushin Il-30 tactical swept wing bomber prototype developed from the Il-28
- Ilyushin Il-32 prototype cargo glider
- Ilyushin Il-34[11] proposed motorized version of Il-32
- Ilyushin Il-36[11] long-range, high-altitude reconnaissance aircraft project
- Ilyushin Il-38[11] bomber project
- Ilyushin Il-38 maritime patrol/ASW aircraft developed from the Il-18
- Ilyushin Il-40 prototype jet-powered ground attack aircraft
- Ilyushin Il-42[11] ground-attack aircraft project developed from the Il-40; lost to the Sukhoi T-8
- Ilyushin Il-46 jet bomber prototype developed from the Il-30
- Ilyushin Il-54 supersonic bomber prototype; cancelled due to the Yak-25
- Ilyushin Il-56[11] front-line bomber
- Ilyushin Il-58 carrier-based attack aircraft, Tu-91 competitor
- Ilyushin Il-60[11] four-engine military transport; lost to the An-22
- Ilyushin Il-62 long-range narrow-body jet airliner
- Ilyushin Il-64[11] twin-engine turboprop airliner, proposed Il-14 replacement; cancelled in favor of the Il-62
- Ilyushin Il-66 (supersonic airliner project 1959)[11]
- Ilyushin Il-66 (military transport project early 1960s)[11]
- Ilyushin Il-70 (first short-haul airliner project 1961)[11]
- Ilyushin Il-70 (second short-haul airliner project 1961)[11]
- Ilyushin Il-70 (AEW aircraft project 1969)[11]
- Ilyushin Il-72 (supersonic airliner project 1961)[11]
- Ilyushin Il-72 (trijet medium-haul airliner project 1964)[11]
- Ilyushin Il-74[11] trijet airliner project, enlarged Il-72 and Tu-154 competitor; lost to the Tu-154
- Ilyushin Il-76 strategic airlifter
- Ilyushin Il-78 airborne refueling variant of the Il-76
- Ilyushin Il-80 airborne command and control aircraft developed from the Il-86
- Ilyushin Il-82 twin-engine airliner, proposed Tu-134 replacement; cancelled in favor of the Tu-134
- Ilyushin Il-82 internal designation for the A-50
- Ilyushin Il-84 search and rescue variant of the Il-76
- Ilyushin Il-86 medium-range wide-body jet airliner
- Ilyushin Il-87 airborne command post version of the Il-86
- Ilyushin Il-88[11] transport aircraft project; cancelled due to the An-70
- Ilyushin Il-90 proposed long-haul airliner
- Ilyushin Il-96 long-haul wide-body jet airliner developed from the Il-86
- Ilyushin Il-100[11] light multipurpose aircraft project
- Ilyushin Il-102 experimental jet-powered ground attack aircraft
- Ilyushin Il-103 light trainer
- Ilyushin Il-106 proposed heavy military transport; Il-76 replacement
- Ilyushin Il-108 business jet project
- Ilyushin Il-112 light military transport
- Ilyushin Il-114 turboprop regional airliner
- Ilyushin Il-116 regional propliner project
- Ilyushin Il-118 proposed twin propfan version of Il-18
- Ilyushin Il-126[11] proposed business jet
- Ilyushin Il-140 AWACS version of Il-114
- Ilyushin Il-196 long-range, high-capacity airliner project
- Ilyushin Il-276 medium-lift military transport
- Ilyushin Il-476 internal designation for the Il-76MD-90A
(Meridionali - IMAM - Industrie Meccaniche e Aeronautiche Meridonali)
IMPA
(Industrias Metalúrgicas y Plasticas Argentinas S.A.)
(Impuls Flugdrachen GmbH, Munich, Germany)
Indonesian Aerospace and its precursors
(PT Dirgantara Indonesia (DI) - (IAe) Indonesian Aerospace)
AURI
(Angkatan Udara Republik Indonesia, Depot Penjelidikan, Pertjobaan dan Pembuatan - Indonesian Air force research, development, and production depot)
LIPNUR
(Lembaga Industri Penerbangan Nurtanio - Nurtanio Aviation Industry Body)
(Industri Pesawat Terbang Nusantara or Industri Pesawat Terbang Nurtanio)
Indraéro
(Sociétè Indraéro)
(Indy Aircraft Limited, Independence, IA)
Ingam-foster
(Texas Aeroplane Co (founders: Jay Ingram, Charles A Foster), Decatur, TX)
- Ingam-Foster 1914 Biplane[16]
Inland
(Inland Aviation Co (Pres: Arthur Hardgrave), 14 St and Minnesota Ave, Kansas City, KS)
Innovator
(Innovator Technologies)
(Instituto Nacional de Tecnica Aeronautica - national institute of aeronautics)
Interavia
(Interavia Konstruktorskoye Buro AO — Russia)
(1968: Interceptor Corp, Norman, OK, c. 1973: Interceptor Co, Boulder, CO)
International
(International Aircraft Corp organized from Catron & Fisk, Santa Monica, CA)
International
(International Aircraft Corp organized from Catron & Fisk, Santa Monica CA)
- International Duckling[16]
International Helicopters
- International Helicopters Commuter II[21]
International Ultralight
(International Ultralight Aviation)
(InterPlane Aircraft sro, Zbraslavice, Czech Republic)
Interstate
(Interstate Aircraft Company)
(Interstate Aircraft & Engineering Corp (Pres: Donald White), El Segundo, CA)
Cadet airplanes:
TDR drones:
XBDR jet-powered drone:
Invincible
(Invincible Metal Furniture Co, Aircraft Div (Pres: John A Schuette), Manitowoc, WI)
Ion
(Ion Aircraft)
IPD
(Instituto de Pesquisas e Desenvolvimento English:Research and Development Institute (University of São Paulo))
IPE
(Industria Paranaense de Estruturas)
(Karlis Irbitis)
- Data from:[27]
- Irbitis Gambija - K.Irbitis (for N.Pulins)
- Irbitis-Backman I.4 Vanadzins - K.Irbitis / A.S.Christine Backman
- Irbitis I-1
- Irbitis I-2
- Irbitis I-4
- Irbitis I-5 Ikars II
- Irbitis I-6 Gambija
- Irbitis I-7 Zilais Putns
- Irbitis I-8 Zilais Putns II - N.Pulins / K. Irbitis
- Irbitis I-9 Vanags / Valsts Daugavpils Arodskola
- Irbitis I-12 – K. Irbitis - 2-seater, later converted to single-seater
- Irbitis I-14
- Irbitis I-15a
- Irbitis I-15b
- Irbitis I-16
- Irbitis I-17
- Pulins-Irbitis P.2 Spriditis (I.1) – N.Pulins & K.Irbitis
- Pulins-Irbitis P.3 Ikars (I.2) – N.Pulins & K.Irbitis
Ireland
((G Sumner) Ireland Aircraft Inc, Curtiss Field, Garden City NY)
(Italian Rotors Industries)
(Iranian Revolutionary Guard Corps)
IRMA
(Intreprinderea de Reparat Material Aeronautic)
Irwin
(Irwin Aircraft Co, 126 O St, Sacramento, CA)
Irwin
(Gus Irwin (or Irvin?), 507 S Russell, Pampa, TX)
Isaac
(Archibald C. J. Isaac, Pittsfield, MA)
ISAE
(Integrated Systems Aero Engineering (Pres: Brent Brown), UT)
Ishibashi
(Katsunami Ishibashi)
- Ishibashi SPAD XIII Racing Aircraft[8]
Ishikawajima
(KK Ishikawajima Hikoki Seisakusho - Ishikawajima Aeroplane manufacturing Co. Ltd.)
Island
(Island Aircraft Corp (Pres: LeRoy LoPresti), no location.)
Isobe
(Onokichi Isobe)
- Isobe 1910 Seaplane[8]
- Isobe No.2[8]
- Isobe Rumpler Taube[8]
Israel
(Gordon Israel, Los Angeles, CA)
Issoudun
(Issoudun Aircraft Corp, Northville, MI)
IST
(Philippines Institute of Science and Technology)
Istra
(Istra Experimental Mechanics Depot)
ITA
(Instituto Tecnològicas Aeronáutica)
(Aeroitba, Instituto Tecnológico de Buenos Aires, ITBA)
Itoh
(Itoh Aeroplane Research Studio)
(Épagny, Haute-Savoie, France)
(Hradec Králové, Czech Republic)
(Ilmailuvoimien Lentokonetehdas- Air Force Aircraft Factory)
Izaki
(Shozo Izaki / Sempu Hiko gakko - Sempu flying School)