Ratu Kalinyamat or Ratna Kencana (died after 1579) was the queen regnant of Kalinyamat and Jepara, a Javanese Islamic polity on northern coast of Central Java in ca.

Ratna Kencana ascended the throne after the assassination of her brother, Sunan Prawoto, and her husband by Arya Penangsang.

The coronation is marked by Surya Sengkala (chronogram): "Terus Karya Tataning Bumi" or approximately 1549 AD to the alleged date of 12 Rabi'ulAwal.

Portuguese historical record "Da Asia" written by De Couto praised Queen Kalinyamat as "Senhora Rainha de Jepara ponderosa e rica"; which means 'the Queen of Jepara', a rich woman and has great power.

[3][4] She was awarded National Hero of Indonesia on 10 November 2023 by Joko Widodo.