Kalinyamat Sultanate, Kalinyamat Kingdom or Jepara Kingdom, was a 16th-century Javanese Islamic polity in the northern part of the island of Java, centred in modern-day Jepara, Central Java, Indonesia. Both Jepara and Kalinyamat was first established as a Duchy (Javanese: Kadipaten) settlements under Demak Sultanate. After succession feud, Kalinyamat was declared as a separate polity from Demak. Traditional accounts provide the names of several of its leaders; Sultan Hadlirin, and his wife and also successor, Retna Kencana (Ratu Kalinyamat) (r. 1549–1579).