The daily Juventud Rebelde reported Sunday the 88-year-old former leader spoke with Fumio Kishido about improving relations between the two nations. It did not specify when the meeting occurred.
Kishido arrived in Cuba on Friday with a delegation of business leaders. He is the first Japanese foreign minister to visit the island.
Fidel Castro handed power to his younger brother in 2006 after suffering from poor health. He has made almost no public appearances in several months.