L Airplane and Helicopter Plans
- Laird LC-DW500 Super Solution
- Laister CG-10
- LAK-12 Lietuva
- Latecoere Late-298
- Latecoere Late-299
- Latecoere Late-300 Croix du Sud
- Lavotchkine-Gorbounov-Goudkov Lagg-3 (1) , (2)
- Lavotchkine La-5
- Lavotchkine La-5 FN
- Lavotchkine La-7
- Lavotchkine La-9
- Lavotchkine La-11
- Lavotchkine La-15 (Fantail)
- Lavotchkine La-152
- Learjet 23
- Leduc RL-21
- Legrand-Simon LS-60
- Le Vier Cosmic Wind
- LET L-13 Blanik
- LET LF-107 Lunak
- LET LF-109 Pionyr
- LET L-23 Super Blanik
- LET L-200 Morava(1) , (2)
- LET L-33 Solo
- LET L-410 Turbolet
- Levasseur PL-8 Oiseau Blanc
- Levasseur PL-10
- L.F.G. Roland C-II Whale
- L.F.G. Roland D-II
- Lincoln Sport
- Lippisch Hol's der Teufel
- Lippisch Grüne Post
- Liore et Olivier LeO-H42
- Liore et Olivier LeO-45 (1) , (2)
- Lockheed Air Express
- Lockheed Vega
- Lockheed Sirius
- Lockheed L-10 Electra
- Lockheed PV-1 Ventura
- Lockheed P-38J Lightning (1) , (2)
- Lockheed P-80 Shooting Star
- Lockheed F-94B Starfire
- Lockheed T-33
- Lockheed F-94C Starfire
- Lockheed L-1329 Jetstar
- Lockheed P2V7 Neptune
- Lockheed XFV-1 Salmon
- Lockheed L-188 Electra
- Lockheed C-130 Hercules
- Lockheed F-104 Starfighter (1) , (2)
- Lockheed U-2B
- Lockheed YF-12A
- Lockheed SR-71
- Lockheed L-1049A Super Constellation
- Lockheed EC-121 Warning Star
- Lockheed L-1011 Tristar (1) , (2)
- Lockheed S-3A Viking
- Lockheed F-117A Nighthawk
- Lockheed Martin F-22 Raptor
- Loire 21
- Loire 46
- Loire 50
- Loire 130
- Loire-Nieuport LN-161
- Long Midget Mustang
- Loravia LCA 10 Topaze
- LTV A-7D Corsair II
- LTV A-7E Corsair II
- Lucas L-5
- Luscombe 10
- Luton Minor
