| lengthened | prolongé |
| lengthening | allongement |
| lengthways | longitudinalement |
| lengthwise | longitudinalement |
| lengthy | très long |
| Lengwil | Lengwil |
| Leni Riefenstahl | Leni Riefenstahl |
| leniency | douceur |
| lenient | clément |
| Lenin | Lénine |
| Lenin in Paris | Lénine à Paris |
| Lenin Peace Prize | Prix Lénine pour la paix |
| Lenin Peak | Pic Lénine |
| Lenin Prize | Prix Lénine |
| Leningrad | Saint-Pétersbourg |
| Leningrad Codex | Codex de Léningrad |
| Leningrad Cowboys | Leningrad Cowboys |
| Leningrad Nuclear Power Plant | Centrale nucléaire de Leningrad |
| Leningrad Oblast | Oblast de Léningrad |
| Leningradsky Rail Terminal | Gare de Leningrad |
| Lenk im Simmental | Lenk im Simmental |
| Lenna | Lenna |
| Lennart Carleson | Lennart Carleson |
| Lennart Johansson | Lennart Johansson |
| Lennart Meri | Lennart Meri |
| Lennart Torstenson | Lennart Torstenson |
| Lennier | Lennier |
| Lennon | Lennon |
| Lennox Lewis | Lennox Lewis |
| Lennox-Gastaut syndrome | Syndrome de Lennox-Gastaut |
| Lenny Kravitz | Lenny Kravitz |
| Lenovo Group | Lenovo |
| lens | cristallin |
| Lens antennas | Antenne lentille |
| Lens design | Conception des lentilles |
| Lens mount | Baïonnette |
| Lens speed | Luminosite |
| Lent | Carême |
| Lentibulariaceae | Lentibulariaceae |
| Lenticular cloud | Altocumulus lenticularis |
| Lenticular galaxies | Galaxie lenticulaire |
| Lenticular galaxy | Galaxie lenticulaire |
| Lenticular lens | Imagerie lenticulaire |
| Lentienses | Lentiens |
| lentil | lentille |
| Lentini | Lentini |
| Lentivirus | Lentivirus |
| Lenzburg | District de Lenzburg |
| Lenzerheide | Lenzerheide |
| Lenzkirch-Kappel | Lenzkirch-Kappel |
| Leo | Lion |
| Leo Aiolia | Aiolia |
| Leo Allatius | Leone Allacci |
| Leo Baekeland | Leo Baekeland |
| Leo Beenhakker | Leo Beenhakker |
| Leo Belgicus | Lion Belgique |
| Leo Borchard | Leo Borchard |
| Leo Burnett Worldwide | Leo Burnett Worldwide |
| Leo Castelli | Leo Castelli |
| Leo Esaki | Leo Esaki |
| Leo Fender | Leo Fender |
| Leo Franco | Leo Franco |
| Leo Frank | Leo Frank |
| Leo I | Léon Ier |
| Leo II | Léon II |
| Leo III | Léon III |
| Leo III the Isaurian | Léon III |
| Leo IV | Léon IV |
| Leo IV the Khazar | Léon IV |
| Leo James Rainwater | James Rainwater |
| Leo Joseph Suenens | Léon-Joseph Suenens |
| Leo Kanner | Léo Kanner |
| Leo Königsberger | Leo Königsberger |
| Leo Marks | Leo Marks |
| Leo Minor | Petit Lion |
| Leo of Finland | Léo |
| Leo Perutz | Leo Perutz |
| Leo Sayer | Leo Sayer |
| Leo Tindemans | Léo Tindemans |
| Leo Tolstoy | Léon Tolstoï |
