| Lowell Observatory Near-Earth-Object Search | Lowell Observatory Near-Earth-Object Search |
| Lower bed | Mura |
| Lower Carniola | Dolenjska |
| Lower House | spodnji dom |
| Lower limb | Čevelj |
| Lower Normandy | Spodnja Normandija |
| Lower orders | Vas |
| Lower Rhine | Bas-Rhin |
| Lower Saxony | Spodnja Saška |
| Lower Sorbian language | Sorbščina |
| Lower Styria | Štajerska |
| Loxodonta | Afriški slon |
| Loxodonta africana | Afriški slon |
| Loška Dolina | Občina Loška dolina |
| Loški Potok | Občina Loški Potok |
| LS | LS |
| LSD | LSD |
| LT | LT |
| Lt-yr | Svetlobno leto |
| lubricant | mazivo |
| LUC | Luka Evangelist |
| Luca Badoer | Luca Badoer |
| Lucania | Bazilikata |
| Lucasian Professor of Mathematics | Lucasov profesor matematike |
| Lucca | Luka Evangelist |
| Luceafăr | Lucifer |
| Lucerne | Luzern |
| Lucho González | Luis González |
| Lucia | Lucija |
| Lucia of Tripoli | Lucija |
| Luciano Burti | Luciano Burti |
| Luciano Figueroa | Luciano Figueroa |
| Luciano Pavarotti | Luciano Pavarotti |
| Lucien Laurent | Lucien Laurent |
| Lucifer | Lucifer |
| Lucius Malfoy | Lucius Malfoy |
| luck | sreča |
| Lucka | Luka Evangelist |
| Lucky prime | Srečno praštevilo |
| Lucretia | Lukrecij |
| Lucretius | Lukrecij |
| Lucy | Lucy |
| Ludoviko Lazaro Zamenhof | Ludwik Lazarus Zamenhof |
| Ludwig Beck | Ludwig Beck |
| Ludwig Boltzmann | Ludwig Edward Boltzmann |
| Ludwig Börne | Ludwig Börne |
| Ludwig Ritter von Köchel | Ludwig von Köchel |
| Ludwig van Beethoven | Ludwig van Beethoven |
| Ludwig Wittgenstein | Ludwig Wittgenstein |
| Luena River | Luena |
| Lues venereal | Sifilis |
| Lufthansa | Lufthansa |
| Luftwaffe | Luftwaffe |
| Luggable computer | Prenosnik |
| Luigi Boccherini | Luigi Boccherini |
| Luigi Cherubini | Luigi Cherubini |
| Luigi Fagioli | Luigi Fagioli |
| Luigi Galvani | Luigi Galvani |
| Luigi Villoresi | Luigi Villoresi |
| Luis Aragonés | Luis Aragonés |
| Luis Enrique Martínez García | Luis Enrique |
| Luis Gonzalez | Luis González |
| Luis Perez-Sala | Luis Perez-Sala |
| Luis Walter Alvarez | Luis Walter Alvarez |
| Luitzen Egbertus Jan Brouwer | Luitzen Egbertus Jan Brouwer |
| Luiz Carlos Bombonato Goulart | Luizão |
| Luizão | Luizão |
| Lukas | Luka Evangelist |
| Lukas Podolski | Lukas Podolski |
| Luke | Luka Evangelist |
| Luke the Evangelist | Luka Evangelist |
| Lukovica | Občina Lukovica |
| Lumbarda | Lumbarda |
| Lumen | Lumen |
| Luminescence | Luminiscenca |
| Luminiferous aether | Eter |
| luminosity | svetilnost |
| Luna | Luna |
| Luna programme | Luna |
