| lycée | escuela superior |
| Lycée en France | Gymnasium |
| Lycée Louis-le-Grand | Liceo Louis-le-Grand |
| Lydia | Lidia |
| Lydia Liliuokalani | Liliuokalani de Hawái |
| Lydia Litvak | Lydia Litvyak |
| Lydie | Lidia |
| Lygia Bojunga | Lygia Bojunga Nunes |
| Lyman Alpha | Lyman Alpha |
| Lyman Beta | Lyman Beta |
| Lymantriidae | Lymantriidae |
| lymphatique | linfático |
| lymphe | linfa |
| Lymphocyte B | Linfocito B |
| Lymphocyte T | Linfocito T |
| Lymphogranulome vénérien | Chalamydia trachomatis |
| Lymphome | Linfoma |
| Lymphome non-hodgkinien | Linfomas no-Hodgkins |
| lyncher | linchar |
| Lyndon LaRouche | Lyndon LaRouche |
| Lynette Scavo | Lynette |
| Lynn Margulis | Lynn Margulis |
| Lynwood | Lynwood |
| lynx | lince |
| Lynx du Canada | Lynx canadensis |
| lynx roux | lince rojo |
| Lynyrd Skynyrd | Lynyrd Skynyrd |
| Lyoko | Lyoko |
| Lyon | Lyón |
| Lyonel Feininger | Lyonel Feininger |
| Lyonpo Khandu Wangchuk | Lyonpo Khandu Wangchuk |
| Lyophilisation | Liofilización |
| lyophiliser | deshidratar por congelación |
| Lyra | Lyra |
| Lyra et les oiseaux | El Oxford de Lyra |
| lyre | lira |
| Lyria | Lyria |
| lyrique | lírico |
| lyrisme | lirismo |
| lys | azucena |
| Lys Assia | Lys Assia |
| Lysandre | Lisandro |
| Lysichiton | Lysichiton |
| Lysimachia | Lysimachia |
| Lysimaque | Lisímaco de Tracia |
| Lysimaque commune | Lysimachia |
| lysimétrie | lisimetría |
| Lysine | Lisina |
| Lysippe | Lisipo |
| Lysistrata | Lisístrata |
| Lysithéa | Lisitea |
| Lysithée | Lisitea |
| Lysosome | Lisosoma |
| Lysozyme | Lisozima |
| Lyss | Lyss |
| Lyssach | Lyssach |
| Lystrosaurus | Lystrosaurus |
| Lythraceae | Lythraceae |
| Lyudmila Bragina | Lyudmila Bragina |
| Lyudmila Kondratyeva | Lyudmila Kondratyeva |
| là | allí |
| Là dessous | Bajo |
| là où | adondequiera |
| là-bas | allí |
| Là-dedans | Río Drin |
| là-dessus | por consiguiente |
| Là-haut | En las alturas |
| László Biró | Ladislao Biró |
| László Kovács | László Kovács |
| László Kubala | Ladislao Kubala |
| László Lovász | László Lovász |
| László Moholy-Nagy | László Moholy-Nagy |
| László Sólyom | László Sólyom |
| Lázaro Cárdenas del Río | Lázaro Cárdenas del Río |
| lâche | cobarde |
