| Lviv International Airport | Lviv |
| Lviv Oblast | Oblast de Lviv |
| Lviv University | Université Ivan Franko |
| LVMH | LVMH - Moët Hennessy Louis Vuitton SA |
| Lvov | Lviv |
| Lwow | Lviv |
| Lwow-Warsaw School of Logic | École de Lvov-Varsovie |
| Ly | LY |
| Lyapunov | Lyapunov |
| Lyapunov fractal | Fractale de Lyapunov |
| Lyapunov stability | Stabilité de Lyapunov |
| Lyase | Lyase |
| Lycaena | Lycaenidae |
| Lycaenidae | Lycaenidae |
| Lycaeninae | Lycaeninae |
| Lycantrophy | Lycanthropie |
| Lycaonia | Lycaonie |
| Lych law | Loi de Lynch |
| lychee | litchi |
| Lychnis flos-cuculi | Lychnis fleur de coucou |
| Lycia | Lycie |
| Lycian | Lycien |
| Lycian language | Lycien |
| Lyciasalamandra | Lyciasalamandra |
| Lycksele | Commune de Lycksele |
| Lycksele Municipality | Commune de Lycksele |
| Lycomedes | Lycomède |
| Lycoming Engines | Lycoming Engines |
| Lycoperdon perlatum | Vesse de loup |
| Lycophron | Lycophron |
| Lycopodiaceae | Lycopodiaceae |
| Lycopodiella | Lycopodiella |
| Lycopodiophyta | Lycophyte |
| Lycopodiopsida | Lycopodiopsida |
| Lycopodium | Lycopodium |
| Lycopodium clavatum | Lycopode officinal |
| Lycopus | Lycopus |
| Lycoris | Lycoris |
| Lycurgus | Lycurgue |
| Lycurgus of Athens | Lycurgue |
| Lycurgus of Sparta | Lycurgue |
| Lycus | Lycos |
| Lycée Condorcet | Lycée Condorcet |
| Lycée Henri-IV | Lycée Henri-IV |
| Lycée International de Saint Germain-en-Laye | Lycée international |
| Lycée Louis-le-Grand | Lycée Louis-le-Grand |
| Lydia | Lydie |
| Lydia Child | Lydia Child |
| Lydia Litvyak | Lydia Litvak |
| Lydia Lunch | Lydia Lunch |
| Lydia Wideman | Lydia Wideman |
| Lydian mode | Lydie |
| Lydéric and Phinaert | Lydéric et Phinaert |
| lye | lessive |
| Lygia Bojunga Nunes | Lygia Bojunga |
| Lying-in room | Chambre de travail |
| Lying-in woman | Accouchée |
| Lyman Alpha | Lyman Alpha |
| Lyman Alpha forest | Serie Lyman Alpha |
| Lyman Beta | Lyman Beta |
| Lyman continuum | Continu de Lyman |
| Lyman series | Série de Lyman |
| Lyman Spitzer | Lyman Spitzer |
| Lyman-alpha forest | Forêt Lyman-α |
| Lymantriidae | Lymantriidae |
| Lyme | Lyme |
| Lyme Bay | Baie de Lyme |
| Lyme disease | Borréliose |
| Lymm | Lim |
| Lymnaea stagnalis | Petite limnée |
| lymph | lymphe |
| lymphatic | lymphatique |
| lymphatic system | système lymphatique |
| Lymphocytes | Vaisseau lymphatique |
| Lympne | Lympne |
| Lynceus | Idas et Lyncée |
| lynch | lyncher |
