In the anime and manga series Naruto, the title character's real parents are not actually known. His mother is shown to have died shortly after giving birth to him, while his father - Minato Namikaze - is a prominent figure in the village hidden in the leaves but doesn't seem to be around much. While it's possible that Naruto was simply orphaned at a young age, there are some fans who believe that he may have been adopted by the Hokage - which would explain why he doesn't seem to have any living relatives.
Interestingly enough, in the Japanese version of the series, Naruto's mother is never actually shown on-screen or mentioned by name. This has led to some speculation that she may actually be alive and well, and could potentially play a larger role in the story down the line. For now though, we'll just have to wait and see what happens!