| long-distance call | conferencia |
| long-distance running | carrera de fondo |
| Long-distance track event | Carreras de larga distancia |
| long-distance traffic | tráfico de larga distancia |
| long-distance transport | transporte de larga distancia |
| long-drawn-out | muy prolongado |
| Long-eared Owl | Asio otus |
| Long-jawed orb weaver | Tetragnathidae |
| long-lasting | duradero |
| long-legged | zanquilargo |
| Long-legged Buzzard | Buteo rufinus |
| Long-line fishing | Pesca con palangre |
| long-lived | longevo |
| Long-nosed Shrew Opossum | Rhyncholestes |
| long-playing record | LP |
| long-range | de gran alcance |
| long-standing | antiguo |
| Long-tailed Chinchilla | Chinchilla lanigera |
| Long-tailed Finch | Poephila acuticauda |
| Long-tailed jaeger | Stercorarius longicaudus |
| Long-tailed Skua | Stercorarius longicaudus |
| Long-tailed thresher shark | Tiburón azotador |
| Long-tailed tits | Aegithalidae |
| long-term | a largo plazo |
| long-term effect | efecto a largo plazo |
| long-term experiment | experimento a largo plazo |
| long-winded | interminable |
| long-windedness | palabrería |
| Longboard | Longboard |
| longboat | chalupa |
| longbow | arco largo |
| Longest word in English | Rindfleischetikettierungsüberwachungsaufgabenübertragungsgesetz |
| longevity | longevidad |
| Longford | Condado de Longford |
| longhair | artifice |
| longhand | escritura a mano |
| longhorn | cornilargo |
| Longhorn cowfish | Lactoria cornuta |
| longing | afanoso |
| Longinus | Longino |
| Longirod | Longirod |
| longish | oblongo |
| longitude | longitud |
| longitude east | longitud este |
| Longitude of the ascending node | Longitud del nodo ascendente |
| Longitude of the periapsis | Longitud del periastro |
| longitude west | longitud oeste |
