Nakajima

J1N - Gekkō (月光, Moonlight) - 'Irving' 1941 Navy land-based night fighter

J5N - Tenrai (天雷, Heavenly/Divine Thunder) - 1944 Navy land-based single-seat twin-engine interceptor prototype

Kikka - Kikka (中島 橘花, Orange Blossom) - 1945 jet-engined interceptor prototype; Japan's first jet aircraft

Trainer

A3N - Type 90 Two-seat training fighter (九〇式複座練習戦闘機) - 1936 two-seat trainer developed from the A2N

Torpedo bomber

B3N - 1933 Navy torpedo bomber prototype, lost contract to the Yokosuka B3Y

B4N - 1936 Navy torpedo bomber prototype, lost contract to the Yokosuka B4Y

B5N - Type 97 carrier attacker (九七式艦攻, Kyuushichi-shiki Kanko) - 'Kate' 1937 Navy torpedo bomber

B6N - Tenzan (天山, Heavenly Mountain) - 'Jill' 1941 Navy torpedo bomber

Scout and reconnaissance aircraft

C2N - land-based reconnaissance aircraft based on the Nakajima Ki-6

C3N - Type 97 carrier reconnaissance aircraft (九七式艦上偵察機) - 1936 carrier-borne reconnaissance aircraft

C6N - Saiun (彩雲, Rainbow Cloud) - 'Myrt' 1943 carrier-borne reconnaissance aircraft

E2N - Type 15 reconnaissance floatplane (一五式水上偵察機)- 1927 reconnaissance aircraft

E4N - Type 90-2 reconnaissance seaplane (九〇式二号水上偵察機)1930 reconnaissance aircraft

E8N - Type 95 reconnaissance seaplane (九五式水上偵察機) - 'Dave' 1935 reconnaissance seaplane

E12N - 1938 reconnaissance seaplane prototype, lost to the Kawanishi E12K

Dive bomber

D2N

D3N - 1936 carrier-based dive bomber prototype based on the C3N and B5N, lost to the Aichi D3A

Heavy bomber

G5N - Shinzan (深山, Deep Mountain) - 'Liz' 1941 heavy four-engine long-range heavy bomber prototype for Project Z

G8N - Renzan (連山, Mountain Range) - 'Rita' 1945 heavy four-engine long-range heavy bomber

Fugaku - Fugaku (富嶽, Mount Fuji) - 1945 projected six-engine long-range bomber for Project Z; the G10N designation is a postwar extrapolation and was not officially used

Transport

L1N - naval version of Ki-34

L2D - Type 0 Transport (零式輸送機) -1939 Navy transport aircraft; licensed copy of Douglas DC-3

Fighter

Ko 3 (甲3) - fighter-trainer, license-built Nieuport 24

Ko 4 (甲4) - biplane fighter, license-built Nieuport-Delage NiD 29

Type 91 fighter (九一式戦闘機) - 1931 parasol monoplane fighter

Ki-8 - 1934 fighter prototype

Ki-11 - 1934 fighter prototype, lost to the Kawasaki Ki-10

Ki-12 - 1936 fighter prototype, lost to the Mitsubishi Ki-18

Ki-27 - Type 97 Fighter (九七式戦闘機) - late 1936 Army monoplane fighter

Ki-37 - 1937 fighter (project only)

Ki-43 - Type 1 Fighter (一式単座戦闘機) or Hayabusa (隼, Peregrine Falcon) - 'Oscar' 1939 Army fighter

Ki-44 - Type 2 Single-seat fighter (二式単座戦闘機) or Shōki (鍾馗, Devil-Queller) - 'Tojo' 1940 Army fighter

Ki-53 - multi-seat heavy fighter (project only)

Ki-58 - escort fighter prototype based on the Ki-49

Ki-62 - 1941 prototype fighter, competed with Kawasaki Ki-61 design

Ki-63 - version of Ki-62 powered by a radial engine

Ki-75 - heavy fighter (project only)

Ki-84 - Type 4 Fighter (四式戦闘機) or Hayate (疾風, Gale) - 'Frank' 1943 Army fighter

Ki-87 - 1945 high-altitude fighter-interceptor prototype

Ki-101 - twin-engine night fighter based on the J1N (project only)

Ki-113 - Ki-84 with some steel parts (project only)

Ki-116 - 1945 single-seat fighter prototype

Ki-117 - production designation of the Ki-84N

Ki-118 - short-range fighter modified from the Mitsubishi A7M (project only)

Ki-201 - Karyū (火龍, Fire Dragon) - prototype 1945 Army jet fighter/attack aircraft with strong resemblance to the German Messerschmitt Me 262 (project only)

Ki-337 - two-seat fighter (project only)

Bomber

B-6 - license-built Bréguet 14B.2

Ki-13 - attack aircraft (project only)

Ki-19 - 1937 Army twin-engine heavy bomber (prototypes only), lost to the Mitsubishi Ki-21

Ki-31 - two-seat light bomber (project only)

Ki-49 - Type 100 Heavy Bomber (一〇〇式重爆撃機) or Donryū (呑龍, Storm Dragon) - 'Helen' 1941 Army heavy bomber

Ki-52 - dive bomber, army version of D3N (project only)

Ki-68 - army bomber version of G5N (project only)

Ki-82 - high-speed heavy bomber (project only)

Reconnaissance

Ki-4 - Type 94 Reconnaissance aircraft (九四式偵察機) - 1933 reconnaissance biplane

Transport

Ki-6 - Type 95 Trainer (九五式二型練習機) - 1930 transport, training aircraft; licensed copy of the Fokker Super Universal

Ki-16 - cargo transport/ground refueling aircraft based on the Douglas DC-2 (project only)

Ki-34 - Type 97 Transport (九七式輸送機) - 'Thora' 1937 Army transport aircraft version of AT-2

Ki-41 - cargo transport (project only)

Ki-50 - aerial refueling/fuel tanker version of the Ki-49

Ki-80 - formation commander version of the Ki-49

Trainer

Ko 2 (甲2) - trainer, license-built version of the Nieuport 83 trainer

Kamikaze aircraft

Ki-115 - Tsurugi (剣, Sword) - 1945 kamikaze aircraft; in IJN service, it was called Tōka (藤花, Wisteria Blossom)

Ki-230 - projected kamikaze aircraft

Jet prototypes

Kikka (橘花, Orange Blossom) - 1945 Navy experimental land-based ground attack/ASW jet influenced by the Messerschmitt Me 262, two prototypes built; first Japanese jet aircraft

Civil aircraft

Nakajima-Douglas DC-2 - license-built Douglas DC-2

Super Universal - 1930 airliner; license-built Fokker Super Universal

AN-1 - a Ki-11 prototype converted to a liaison/courier aircraft for the Asahi Shimbun

AT-1 - original design of AT-2

AT-2 - 1936 passenger transport

LB-2 - Akatsuki-gō (暁号, Dawn) - 1936 navy's bomber prototype turned airliner

N-19 - a Ki-19 prototype converted to a mail plane for the Dōmei Tsushin

Nakajima N-36 - 1928 transport prototype

Nakajima P-1 - 1933 mail plane; converted from E4N

Aircraft engines

Kotobuki (寿, Longevity); license-built Bristol Jupiter

Ha5

Hikari (光, Light), development of the Nakajima Kotobuki

Sakae (栄, Prosperity) - powered both the Mitsubishi A6M Zero, and its own Nakajima Ki-43 Oscar fighters. Known as Type 99 in Army service and NK1 in Navy service

Homare (誉, Honor), air-cooled twin-row 18 cylinder radial

Ha-49

Mamoru (護, Protect)

Ha-109

Ha219 (later known as the Ha-44)