Mangkubumi, Crown Princess of Yogyakarta is the first child and daughter of Sultan Hamengkubuwono X of Yogyakarta and his consort, Queen Hemas. On 5 May 2015 she was proclaimed Crown Princess by her father. She married Prince Wironegoro, a businessman and philanthropist. If she accedes the throne, she will become the first Sultanah of Yogyakarta.

Sri Sultan Hamengkubawono X is the Sultan of the historic Yogyakarta Sultanate in Indonesia and is currently also the Governor of the modern Yogyakarta Special Region.