Hamengkubuwono IX or HB IX (12 April 1912 – 2 October 1988[a]) was an Indonesian statesman and royal who was the second vice president of Indonesia, the ninth sultan of Yogyakarta, and the first governor of the Special Region of Yogyakarta. Hamengkubuwono IX was also the Chairman of the first National Scout Movement Quarter and was known as the Father of the Indonesian Scouts.