| Name | Explanation | Examples | Pictures |
|---|---|---|---|
| L | Initial of N.R.Lobanov | L-1 |
|
| La | Initials of Lavochkin Design Bureau; | La-5, La-15 | |
| LB, LB-2LD | Light Bomber Legkij Bombardirovschik (Light Bomber with 2 Lorraine-Dietrich engines) |
LB-2LD | |
| LEM | Initials of Lev Malinovskij | LEM-2, LEM-3 | |
| LFI | Light front line fighter Legkij Frontovoj Istrebitel |
- | |
| LIG | Leningrad Institute for Civil Airfleet
Leningrad Institute GVF |
LIG-6 | |
| LII | Flight Research Institute Letno-Issledovatelskij Institute |
See Flight-Research Institute WEB Site! | ![]() |
| LL | Flying Boat Letauschaja Lodka |
LL-143 | ![]() |
| LM | Seaplane by Lebedev Lebed Morskoj |
LM-1 | |
| LR | Light Recco Legkij Razvedchik |
LR | ![]() |
| LSh | Light attack fighter Legkij Shturmovik |
LSh | - |
| LYaM | Aircraft built by M.G.Lerke, G.V.Yankovsky and F.E.Mosca. Designation built of the initials. | LYaM | ![]() |