| Letter of Reconciliation of the Polish Bishops to the German Bishops | Orędzie biskupów polskich do biskupów niemieckich |
| Letter-spacing | Tracking |
| letterer's craft | liternictwo |
| Letterist International | Lettrist International |
| Letterpress printing | Druk wypukły |
| Letters from the Earth | Listy z Ziemi |
| Lettish | Język łotewski |
| lettuce | sałata |
| Letychiv | Latyczów |
| Leuchtenberg | Leuchtenberg |
| Leucippe | Leucyp |
| Leucippus | Leucyp |
| Leuciscus | Leuciscus |
| Leucite | Leucyt |
| Leucocytes | Leukocyt |
| Leucoplast | Leukoplast |
| Leuk | Leuk |
| leukaemia | białaczka |
| Leukemia | Białaczka |
| Leukerbad | Leukerbad |
| Leukocyte extravasation | Diapedeza |
| Leukocytes | Leukocyt |
| leukocytosis | leukocytoza |
| Leukoplakia | Leukoplakia |
| Leukotriene | Leukotrieny |
| Leun | Leun |
| Leuna | Leuna |
| Leutershausen | Leutershausen |
| Leutkirch im Allgäu | Leutkirch im Allgäu |
| Leuven | Leuven |
| Leuven administrative Arrondissement | Leuven |
| Lev | lew |
| Lev Alburt | Lew Alburt |
| Lev Dyomin | Lew Diomin |
| Lev Gumilev | Lew Gumilow |
| Lev Kamenev | Lew Kamieniew |
| Lev Kopelev | Lew Kopielew |
| Lev Landau | Lew Landau |
| Lev Lemke | Leon Lemke |
| Lev Polugaevsky | Lew Poługajewski |
| Lev Pontryagin | Lew Pontriagin |
| Lev Psakhis | Lew Psachis |
| Lev Rebet | Lew Rebet |
| Lev Rudnev | Lew Rudniew |
| Lev Semenovich Berg | Lew Berg |
| Lev Shestov | Lew Szestow |
| Lev Skrbenský z Hříště | Lev Skrbensky z Hriste |
| Lev Vygotsky | Lew Wygotski |
| Lev Yashin | Lew Jaszyn |
| Levain | Zakwas chlebowy |
| Levan Gachechiladze | Lewan Gaczecziładze |
| Levan Kobiashvili | Lewan Kobiaszwili |
| Levan Tskitishvili | Lewan Ckitiszwili |
| Levanger | Levanger |
| Levant | Lewant |
| Levant Sparrowhawk | Krogulec krótkonogi |
| Levante UD | Levante Walencja |
| LeVar Burton | LeVar Burton |
| Levashovo | Lewaszowo |
| Levator scapulae muscle | Mięsień dźwigacz łopatki |
| Leveche | Leveche |
| level | piętro |
| Level editor | Edytor poziomów |
| Level of alcohol | Zawartość alkoholu we krwi |
| Level of detail | Level Of Detail |
| level of education | poziom wykształcenia |
| Level of free convection | Poziom swobodnej konwekcji |
| Level of sound | Dynamika |
| Level of unemployment | Bezrobocie |
| Level Plane Records | Level Plane Records |
| Level set | Izolinia |
