Susuhunan, or in short version Sunan, is a title used by the monarchs of Mataram and then by the hereditary rulers of Surakarta, Indonesia.
The name Susuhunan is also used as a romantic nickname for loved ones, but also for highly respected public figures.
The full title of the Susuhunan of Surakarta in Javanese is: Sahandhap Sampeyandalem ingkang Sinuhun Kangjeng Susuhunan Paku Buwana Senapati ing Alaga Ngabdurrahman Sayyidin Panatagama ("His Exalted Majesty, The Susuhunan Paku Buwana, Commander in the Field of Battle, Servant of the Most Gracious, the Regulator of Religion").
This long title is occasionally abbreviated in media with Latin texts as SSISKS, denoting Sahandhap Sampeyandalem Ingkang Sinuhun Kangjeng Susuhunan, followed by the regnal name.
The rulers of Surakarta traditionally adopt the regnal name Pakubuwono (also spelled Pakubuwana Javanese pronunciation: [pakubuwɔnɔ]).