| Ladybugs | Coccinellidae |
| Ladykiller | Bourreau des coeurs |
| ladylike | de dame |
| Ladytron | Ladytron |
| Laeken | Laeken |
| Laertes | Laërte |
| Laestadianism | Læstadianisme |
| Laestrygonians | Lestrygons |
| Laetare Sunday | Quatrième dimanche de Carême |
| Laetitia | Lætitia |
| Laetitia Casta | Laetitia Casta |
| Laevisuchus | Laevisuchus |
| Lafarge | Lafarge SA |
| Lafayette County | Comté de Lafayette |
| Lafayette Escadrille | Escadrille La Fayette |
| Lafayette transmitter | Émetteur de Lafayette |
| Lafcadio Hearn | Lafcadio Hearn |
| Laffer Curve | Courbe de Laffer |
| Lafontaine | Lafontaine |
| lag behind | traîner |
| Lagan River | Lagan |
| Lagardère Group | Groupe Lagardère |
| Lagarostrobos | Pin Huon |
| Lagash | Lagash |
| Lagavulin Single Malt | Lagavulin |
| Lage | Lage |
| Lagenorhynchus | Lagenorhynchus |
| lager | bière blonde |
| Lagerstroemia indica | Lilas des Indes |
| Laggar Falcon | Faucon laggar |
| Laghman Province | Laghmân |
| Laghouat | Laghouat |
| Laghouat Province | Laghouat |
| Lagidium | Lagidium |
| Lagitupu Tuilimu | Lagitupu Tuilimu |
| Lagman of the Isle of Man | Lagman de Man |
| Lago de Atitlán | Lac Atitlán |
| Lagoa dos Patos | Lagoa dos Patos |
| Lagoa Mirim | Lagoa Mirim |
| Lagomorpha | Lagomorpha |
| lagoon | lagon |
| Lagoon Nebula | Nébuleuse de la Lagune |
| Lagoon triggerfish | Rhinecanthus aculeatus |
| lagooning | lagunage |
| Lagorchestes | Lagorchestes |
| Lagos | Lagos |
| Lagos State | État de Lagos |
| Lagotto Romagnolo | Lagotto Romagnolo |
| Lagouira | Lagouira |
| Lagrange multipliers | Multiplicateur de Lagrange |
| Lagrange polynomial | Interpolation lagrangienne |
| Lagrangian | Lagrangien |
| Lagrangian mechanics | Équations de Lagrange |
| Lagrangian point | Point de Lagrange |
| Lagrangian points | Point de Lagrange |
| Lagrangian relaxation | Relaxation lagrangienne |
| Lagrasse | Lagrasse |
| LaGuardia Airport | Aéroport international de La Guardia |
| Laguerre polynomials | Polynôme de Laguerre |
| Laguiole | Laguiole |
| Laguiole knife | Laguiole |
| Lagumot Harris | Lagumot Harris |
| Laguna Blanca National Park | Parc national Laguna Blanca |
| Laguna Colorada | Lagune Colorada |
| Laguna province | Laguna |
| Laguna Verde nuclear power plant | Centrale nucléaire de Laguna Verde |
| LagunAir | Lagun Air |
| Lagurus ovatus | Lagure ovale |
| Laguz | Laguz |
| Lahemaa National Park | Parc national de Lahemaa |
