L (Death Note)L LawlietFull nameL Lawliet (manga and anime) Lebensborn Atubia (real name, American film)AliasRyuzaki (竜崎, Ryūzaki) Hideki Ryuga (流河 旱樹, Ryūga Hideki) Lind L. Tailor Eraldo Coil Deneuve L-Prime (in L: Change the World) Yoshio Anderson (in the TV drama)RelativesWatari (handler)
Light actually did find out L’s real name in the end, because he was the one to collect REM’s note book after she killed L. Light would have read L’s real name where it was plainly written in the notebook. after many attempts of finding L’s real name, Light decided to manipulate Rem, the Shinigami, to do it for him.
According to both the Death Note Character list on Wikipedia and the L character page on the Death Note Wikia, his full name is L Lawliet. He does have several aliases that sound more like real names but L seems to be his actual name. From the L Wikipedia page: Tsugumi Ohba, the writer of the series […]