| Lycopodiopsida | Lycopodiopsida |
| Lycopodium | Lycophyta |
| Lycopus | Lycopus |
| Lycosa tarantula | Tarêntula |
| Lycurgus | Licurgo de Esparta |
| Lycurgus of Athens | Licurgo de Esparta |
| Lycurgus of Sparta | Licurgo de Esparta |
| Lycus | Lico |
| Lydia | Lídia |
| Lydia Child | Lydia Maria Child |
| Lydian | Modo lídio |
| Lydian mode | Modo lídio |
| lye | barrela |
| lyeage | lixívia |
| lyeyple | barrela |
| Lygia Bojunga Nunes | Lygia Bojunga Nunes |
| lying | falsidadeão (assinatura) |
| Lying on | Jacente |
| lying-in | parto (unidade) |
| Lyman Spitzer | Lyman Spitzer |
| Lymantriidae | Lymantriidae |
| Lyme disease | Doença de Lyme |
| lymph | linfa |
| Lymph node involvement | Linfadenopatia |
| lymphatic | linfático |
| lymphatic system | sistema linfático |
| Lympocyte | Limfócito |
| Lynceus | Linceu |
| lynch | linchar |
| Lynda Thomas | Lynda Thomas |
| Lyndon LaRouche | Lyndon LaRouche |
| Lyngby-Taarbæk | Lyngby-Tårbæk |
| Lyngdal | Lyngdal |
| Lyngen | Lyngen |
| Lynn | Lynn |
| Lynn Compton | Lynn Buck Compton |
| Lynn Margulis | Lynn Margulis |
| lynx | lince |
| lynx-eyed | de vista aguda |
| Lynyrd Skynyrd | Lynyrd Skynyrd |
| Lyon | Lyon |
| Lyon County | Condado de Lyon |
| Lyon Metro | Metro de Lyon |
| Lyonais | Lyon |
| Lyonel Feininger | Lyonel Feininger |
| Lyons | Lyon |
| Lyra | Lyra |
| Lyra Orphée | Orfeu de Lira |
| lyre | lira |
| lyrebird | lira |
| lyric | poéticodão |
| lyrical | lírico |
| lyricism | lirismo |
| lyricist | poeta lírico |
| lyricistthat may be lifted | letristase |
| lyrics | letra |
| Lys | Rio Lys |
| Lys Assia | Lys Assia |
| Lys River | Rio Lys |
| Lysander | Lisandro |
| Lysergic acid diethylamide | Dietilamida do ácido lisérgico |
| Lysias | Lísias |
| Lysichiton | Lysichiton |
| Lysimachia | Lysimachia |
| Lysimachus | Lisímaco |
| lysimetry | lisimetria |
| Lysine | Lisina |
| Lysippos | Lisipo |
| Lysis of Taras | Lísis de Tarento |
| Lysistrata | Lisístrata |
| Lysithea | Lisiteia |
| Lysogenic cycle | Ciclo lisogênico |
| Lysosome | Lisossomo |
| Lystrosaurus | Lystrosaurus |
| Lythraceae | Lythraceae |
| Lythrum | Lythrum |
| Lytic cycle | Ciclo lítico |
| Lyudmila Chernykh | Lyudmila Ivanovna Chernykh |
| Lyudmila Georgievna Karachkina | Lyudmila Georgievna Karachkina |
| Lyudmila Zhuravlyova | Lyudmila Zhuravlyova |
