Tokyo's relations with its neighbours have been regularly strained by the legacy of Japan's wartime aggression, as well as territorial disputes.
"I find it very regrettable that the tension (among the three northeast Asian countries) continues on due to issues of history and other political reasons," Ban told reporters during his visit to Seoul this week.
"We need determination by political leaders. Correct awareness about history is needed," said Ban -- a former South Korean foreign minister.
The latest bout of regional tension was sparked by the visit this month of Japanese ministers and politicians to a controversial shrine in Tokyo that honours the World War II dead including several war criminals.
The shrine is seen as a symbol of Tokyo's aggressive imperial past by China and South Korea, both of which reacted angrily to the visits.