Hamengkubuwono[a] (Javanese: ꦲꦩꦼꦁꦑꦸꦨꦮꦟ) is the current ruling royal house of the Yogyakarta Sultanate in the Special Region of Yogyakarta of Indonesia.

The reigning Sultan of Yogyakarta is the hereditary Governor of the Special Region (Act No.

As with many significant historical and respected figures in Javanese culture, the name of a ruler is usually preceded by honorifics – in most cases the usage is of Sri Sultan before the name.

In full titles the first Hamengkubuwono was titled: "Ngarsadalem Sampeyandalem Hingkang Sinuhun Kangjeng Sultan Hamengkubuwono, Senopati Ing Ngalaga Ngabdurrahman Sayidin Panatagama Kalifatulah, Hingkang Jumeneng Kaping I".

For some Javanese, the name has been interpreted as having the following components: Such an explanation does not necessarily coincide with strict etymology of the word.