Hamao died Thursday in Tokyo, according to a Vatican statement.
Hamao served as bishop of Yokohama for nearly 20 years before being appointed president of the Pontifical Council for the Pastoral Care of Migrants and Itinerant Peoples in 1998.
He was made a cardinal in 2003 and retired from his Vatican job in 2006.
In a message of condolence sent to Hamao's sister and the bishop of Yokohama, Pope Benedict XVI praised the cardinal's "lively concern for the poor and generous service to the universal church."
Near the United Nations Glass Palace in New York, there is a metallic sculpture entitled "Evil Defeated by Good", representing Saint George transfixing a dragon with his lance. It was donated by the USSR in 1990 to celebrate the INF Treaty concluded with the USA in 1987