| Leon Billewicz | Leon Billewicz |
| Leon Bloy | Léon Bloy |
| Leon Cooper | Leon Cooper |
| Leon Dehon | Leon Dehon |
| Leon Festinger | Leon Festinger |
| Leon I | Leo I |
| Leon II | Leo II |
| Leon III | Leo III |
| Leon III Izauryjczyk | Leo III the Isaurian |
| Leon IV Chazar | Leo IV the Khazar |
| Leon IX | Pope Leo IX |
| Leon Jessel | Leon Jessel |
| Leon Lemke | Lev Lemke |
| Leon Marchlewski | Leon Marchlewski |
| Leon Modena | Leon of Modena |
| Leon Pinsker | Leon Pinsker |
| Leon Rupnik | Leon Rupnik |
| Leon Schlumpf | Leon Schlumpf |
| Leon V Armeńczyk | Leo V the Armenian |
| Leon VI Filozof | Leo VI the Wise |
| Leon VII | Pope Leo VII |
| Leon VIII | Pope Leo VIII |
| Leon Wasilewski | Leon Wasilewski |
| Leon X | Pope Leo X |
| Leon XI | Pope Leo XI |
| Leon XII | Pope Leo XII |
| Leon zawodowiec | Léon |
| Leon-Etienne Duval | Léon-Etienne Duval |
| Leona | Leona |
| Leonard | Leonard |
| Leonard Adleman | Leonard Adleman |
| Leonard Bernstein | Leonard Bernstein |
| Leonard Bloomfield | Leonard Bloomfield |
| Leonard Cohen | Leonard Cohen |
| Leonard McCoy | Leonard McCoy |
| Leonard Nimoy | Leonard Nimoy |
| Leonard Orban | Leonard Orban |
| Leonard Peltier | Leonard Peltier |
| Leonard Woolf | Leonard Woolf |
| Leonard Woolley | Leonard Woolley |
| Leonard z Limoges | Leonard of Noblac |
| Leonard z Porto Maurizio | Leonard of Port Maurice |
| Leonard z Quirmu | Leonard of Quirm |
| Leonardo | Leonardo |
| Leonardo Bruni | Leonardo Bruni |
| Leonardo da Vinci | Leonardo da Vinci |
| Leonardo di Bona | Giovanni Leonardo Di Bona |
| Leonardo DiCaprio | Leonardo DiCaprio |
| Leonardo Loredano | Leonardo Loredan |
| Leonardo Rodriguez | Leonardo Rodríguez |
| Leonardo Sandri | Leonardo Sandri |
| Leonardo Torres y Quevedo | Leonardo Torres y Quevedo |
| Leonberg | Leonberg |
| Leonberger | Leonberger |
| Leoncjusz II | Leontios |
| Leonding | Leonding |
| Leone | Sierra Leonean leone |
| Leone Battista Alberti | Leone Battista Alberti |
| Leonel Fernández | Leonel Fernández |
| Leonel Sánchez | Leonel Sánchez |
| Leonhard Euler | Leonhard Euler |
| Leonhard Stock | Leonhard Stock |
| Leonhart Fuchs | Leonhart Fuchs |
| Leonid | Leonidas |
| Leonid Andrejew | Leonid Andreyev |
| Leonid Breżniew | Leonid Brezhnev |
| Leonid Burjak | Leonid Buryak |
