K & S
     SA102 Cavalier - CF-CJQ
     SA102.5 Cavalier - G-BDKJ - N491HC - N7131 - VH-EJJ
Kadiak Speedster KC-2 - NR11312
KAI T-50 Golden Eagle - RoKAF: "001"
Kaiserliche Werft Kiel - (see Kiel)
Kalinin K-12 Zhar-Ptitsa - photo
Kaman
     K-20 HU2K-1 Seasprite - USN: 147203
     K-20 HH-2D Seasprite - USN: 149031
     K-20 UH-2D Seasprite - USN: 151326
     K-20 SH-2G Seasprite - USN: 161642
     K-125A - NX60377
     K-225 - N74146 - USN: 125477, photo
     K-240 HTK-1 - N6062C - USN: 128657, photo
     K-600 HOK-1 - USMC: 125530, 129802, 129816, photo
     K-600 H-43A Huskie - USAF: 58-5524
     K-600 OH-43D Huskie - N5175Q
     K-600-3 H-43B Huskie - USAF: 58-1844, 59-1567, photo
     K-600-3 HH-43B Huskie - USAF: 62-4538
     K-1125 Huskie III - N10029
     K-1200 K-MAX - JA6184 - N699RH
Kamov
     Ka-15 "Hen" - Soviet AF: photo
     Ka-22 Vintokryl "Hoop" - photo
     Ka-25BSh "Hormone-A" - Russian Navy: "77" - Vietnamese Navy: "7511"
     Ka-25PL "Hormone-A" - Ukrainian AF: "36"
     Ka-26 "Hoodlum" - CCCP-24057
     Ka-26 "Hoodlum-A" - FLARF-01755
     Ka-27PL "Helix-A" - Ukrainian AF: "03"
     Ka-29TB "Helix-B" - Soviet Navy: "29", "29"
     Ka-32A1 - RA-31073
     Ka-32AO - RA-31571
     Ka-32S - RA-31584
     Ka-50 Werewolf "Hokum" - Russian AF: "020", "020"
     Ka-52 Alligator "Hokum" - "061"
     Ka-52-2 - photo
     Ka-60-1 - "601"
     Ka-226 - "002"
     Ka-226A - RA-00001
Kappa
     KP-2UR SOVA - PH-3S7
     RVX-100 Sabre - 24-4311
Kaproni Bulgarski KB-11A Fazan - Yugoslav AF: 9923
Karhumäki Karhu 48B - OH-VKL
Kari-Keen 60 - NC109N
Kassel 20 - photo
Kawanishi
     E15K1 Shiun "Norm" - photo
     H3H1 - IJN: photo
     H6K2-L "Mavis" - J-BFOZ
     H8K2-L Seiku "Emily" - IJN: photo
     N1K1 Kyofu "Rex" - photo - photo
     N1K2-J Shiden-Kai "George" - photo - photo
Kawasaki
     A-6 - J-BBFA
     GK-210 P-2J - JMSDF: 4761
     KDA-6 - photo
     Ki-3 Type 93 - IJAAF: 100, photo
     Ki-10 Type 95 "Perry" - IJAAF: photo, photo
     Ki-45-KAI-Hei Toryu "Nick" - IJAAF: "25", photo
     Ki-45-KAI-Ko Toryu "Nick" - IJAAF: photo
     Ki-48 - Chinese AF: 308
     Ki-61-I Hien "Tony" - TAIU-SWPA: photo
     Ki-61-II Hien "Tony" - IJAAF: "17"
     Ki-78 - IJAAF: photo
     Ki-100-Ib - IJAAF: photo
     KV 107 IIA-17 - JA9511 - (see also Boeing Vertol 107)
     C-1 - JASDF: 58-1008
     EC-1 - JASDF: 78-1021
     C-2 - JASDF: 68-1203
     XP-1 - Japanese MoD: 5501
     T-4 - JASDF: 46-5714
Kay Gyroplane 33/1 - G-ACVA
Kazan Ansatt LL - RA-20440
Keith Rider - (see Rider)
Kellett
     K-3 - NC10767 - NC12633
     KD-1 YG-1A - USAAC: 36-352
     XH-10 - USAF: 45-22793
     YO-60 - USAAF: (42-13606)
     XR-8 - USAAF: 43-44714
Kelly Kelly-D - N36KD
Kelowna Convair 5800 - N371FL
Kennerson Shadow Cruiser - N87560
Kerr KE-109 - NC96483
Kestral Kestrel Hawk - C-IABB - N2188Q
Kestrel
     KL-1A - N960KA, N960KA
     KL-1C - photo
Kettering Bug - photo
Keystone, Keystone-Loening
     B-3A - USAAC: photo, photo, photo, photo, photo, photo, photo, photo
     Y1B-4 - USAAC: photo
     B-4A - USAAC: "50"
     B-6A - USAAC: 32-165
     LB-7 - USAAC: 28-388
     K-47 Pathfinder - NX179, NX179
     K-47C - NR5317
     K-84 Commuter - NC63K - NC301
     NK-1 - USN: A-8053
     XO-10 - USAAC: 26-212, 26-212
     Pup - photo, photo
Kharkov KhAI-1VV - photo
Khrunichev
     T-411 Aist - RA-0585
     T-411SH - RA-41901
     T-411 Type 60 Aist - photo
     T-507 - photo
Kickert eta ƞ - D-KKUM
Kieger
     AK-01 - F-PRLZ - F-PZMO
     AK-01T - F-PAKT
     AK-2R - F-PARJ
Kiel (Kaiserliche Werft)
     Seeflugzeug (Schulung) - German Navy: 463
Kiel (Flugzeugbau)
     Fk 166 - D-ETON
Kimball McCullocoupe - N511
King's 44 Angel - N44KB - (see also Angel 44)
Kingsford Smith
     Kingsmith - (see Auster J/1BL)
     PL7 Tanker - photo
Kinner
     C-7 Envoy - NC14289
     C-7 XRK-1 - USN: 9747
     R-5 Playboy - NC13778 - photo
     Sportster B - NC14288, NC14288
     Sportster K - NC12299 - photo
     Sportwing B-2 - NC14214 - NC14927, NC14927
Kitfox - (see Skystar)
Kjeller
     PK X-1 - photo, photo
     PK X-2 - photo
Klemm
     L 25 - photo
     L 25 a I - D-EPEH
     L 25 b I - photo
     L 25 d II - VH-UUR, VH-UUR
     L 25 d VIIR - PH-LFK
     KL 32 a XIV - D-2673 - D-EXEK
     Kl 35 d - D-EQXD - N5050
     Kl 107B - D-EJUK
Klemm-Daimler L 15 - (see Daimler)
Klinke K1 - D-EGKW
Klizak SVC Vrabac A - photo
Knechtel KN-1 - D-KNPF, D-KNPF
Knight Twister KT-90 - N67P
Knoller C.II - k.u.k. LFT: 119.15
Kochyerigin
     DI-6 - photo - photo
     LBSh - photo
     LR - photo
Kolb
     FireStar - photo
     Twinstar Mk 3 - G-MYLN
Kondor
     E.III D I - photo
     Taube II - photo
     W.1 - photo
Koolhoven
     F.K.43 - F-ALPO, F-ALPO - PH-ASN - PH-NAP
     F.K.44 - PH-AJM
     F.K.49 - NethAAS: 950, 950
     F.K.51 - NethAAS: photo - RNethN: E-3, E-10
     F.K.51 L.18 - Spanish AF: L.18-175
     F.K.52 - PH-ASW
     F.K.56 - PH-ASB - PH-ATE
     F.K.57 - PH-KOK
     F.K.58 - PH-AVA
     F.K.58A - PH-AVK - PH-AVL
Koppen Puritan 50 - NX20653
Kortenbach & Rauh Kora 1 - D-KORT
Kotula-Lundy Graflite - N870GF
Kraft K-1 Super Fli - N5PK
Kramme & Zeuthen
     KZ I - OY-KZI
     KZ I to KZ X - (see Skandinavisk Aero Industri)
Krauss TRS 1 Hummel - D-HOCY, D-HOCY
Kreider-Reisner C-2 Challenger - photo
Kreimendahl K-10 Shoestring - F-PYXC
Kreit Lambrinck KL 2 - OO-ANP
Kreutzer K-5 Air Coach - N612A, N612A
Krist
     Cloud Cutter - N157CK, N157CK
     Cloud Cutter II - photo
Kronk
     Fw 190 - VH-FWB
     P-51 Mustang - VH-FWZ
Krum Coast Ranger - N6099C
Krylov R II - photo
Kugisho
     MXY7 Ohka Model 11"Baka" - IJN: "I-18"
     MXY7 Okha Model 22"Baka" - IJN: photo, photo
     P1Y1c Ginga "Frances" - USAAF: "T2-1702"
Kupper Ku.4 Austria - photo, photo
Kyushu
     J7W1 Shinden - photo - photo
     Q1W1 Tokai "Lorna" - IJN: photo