Susuhunan, or in short version Sunan, is a title used by the monarchs of Mataram and then by the hereditary rulers of Surakarta, Indonesia.
Additionally in Bali and Yogyakarta, so-called "Kings of kings" reigned with this title, while their kingdoms were called "Sunanates".
The name Susuhunan is also used as a romantic nickname for loved ones, but also for highly respected public figures. Lovers or mistresses were also referred to with this nickname outside in private. The abbreviation Sunan is also used as a given name.