It’s been confirmed in the latest Naruto chapter, 367, that Naruto Uzumaki is indeed the son of the Fourth Hokage. Tsunade and Jiraiya divulged this information during their conversation before Jiraiya heads out to infiltrate the Land of Rain. It was revealed that Minato Namikaze is the actual name of the Fourth Hokage.
Namikaze (波風) contains the characters for ‘wave’ and ‘wind’, and could indicate the Fourth was also a Wind chakra user and passed it on to his son, Naruto. According to Jiraiya, Minato was a shinobi genius …