| Leipzig | Leipzig |
| Leiria | Leiria |
| Leishmania | Leishmania |
| Leisnig | Leisnig |
| Leissigen | Leissigen |
| Leisure Suit Larry | Leisure Suit Larry |
| Leisure Suit Larry goes looking for love | Leisure Suit Larry Goes Looking for Love |
| Leita | Leitha |
| Leite de Vasconcelos | José Leite de Vasconcelos |
| Leitmotiv | Music |
| Leiza | Leitza |
| lejano | remote |
| lejanía | remoteness |
| lejia | lye |
| Lejona | Leioa |
| lejos | further |
| lejos de | anything but |
| lejos de casa | afield |
| lejía | bleach |
| lejías | lye |
| Leliano | Laelianus |
| Lella Lombardi | Lella Lombardi |
| Lelystad | Lelystad |
| lema | slogan |
| Lema de la URSS | USSR State motto |
| Lema de Yoneda | Yoneda lemma |
| lema publicitario | slogan |
| Lemgo | Lemgo |
| lemming | lemming |
| Lemmy Kilmister | Lemmy |
| Lemna | Lemna |
| Lemna minor | Lemna minor |
| Lemnaceae | Lemnaceae |
| Lemniscata | Lemniscate of Bernoulli |
| Lemnos | Lemnos |
| Lemon Popsicle | Eskimo Limon |
| Lemona | Lemoa |
| Lemony Snicket | Lemony Snicket |
| Lemosín | Limousin |
| Lempira | Honduran lempira |
| Lemuria | Lemuria |
| Lemuridae | Lemuridae |
| Lemón | Lemon |
| Lemóniz | Lemoiz |
| Lena Hades | Lena Hades |
| Lena Headey | Lena Headey |
| Lenape | Lenape |
| Lenca | Lenca people |
| lencería | dry goods |
| Lendu | Lendu |
| Lene Hau | Lene Hau |
| Lene Nystrøm | Lene |
| Leneas | Lenaia |
| lengua | language |
| Lengua aislada | Language isolate |
| Lengua analítica | Analytic language |
| Lengua artística | Artistic language |
| Lengua aUI | AUI |
| Lengua auxiliar | International auxiliary language |
| lengua azul | bluetongue |
| lengua construida | artificial language |
| Lengua controlada | Controlled natural language |
| Lengua de la India | Hindi |
| Lengua de señas | Sign language |
| Lengua de señas adamorobe | Adamorobe Sign Language |
| lengua de señas americana | American Sign Language |
| Lengua de señas de Providencia | Providence Island Sign Language |
| Lengua de señas Urubu-Kaapor | Urubú Sign Language |
| lengua de signos | sign language |
| Lengua de signos catalana | Catalan Sign Language |
| Lengua de signos española | Spanish Sign language |
| lengua de trabajo | language of communication |
| Lengua ergativa | Ergative-absolutive language |
| lengua extranjera | foreign language |
| Lengua extremeña | Extremaduran language |
| Lengua filosófica | Philosophical language |
| Lengua flexiva | Synthetic language |
| Lengua franca | Lingua franca |
| Lengua Leonesa | Leonese language |
| Lengua litúrgica | Sacred language |
| Lengua lutesca | Lutescan language |
| Lengua lógica | Engineered language |
| lengua madre | mother tongue |
| lengua materna | native language |
| Lengua muerta | Extinct language |
| Lengua Negra | Black Speech |
| Lengua nominativo-acusativa | Nominative-accusative language |
| lengua oficial | official language |
| Lengua pirahã | Pirahã language |
| lengua planificada | artificial language |
| Lengua polisintética | Polysynthetic language |
| lengua romance | Romance language |
| lengua románica | Romance language |
| Lengua Sacra | Sacred language |
| Lengua sona | Sona language |
| lengua tonal | tone language |
| lengua vernácula | vernacular |
