Amangkurat II (also known as Rahmat; died 3 November 1703) was the susuhunan of the Sultanate of Mataram from 1677 to 1703. Before taking the throne, he was the crown prince and had the title Pangeran Adipati Anom.

He was the first Javanese monarch to wear a European-style uniform, thus gaining the nickname Sunan Amral, Amral rendering the meaning "admiral" in Javanese.

Born as Raden Mas Rahmat, he was the son of Amangkurat I of Mataram and Ratu Kulon, daughter of Pangeran Pekik of Surabaya.

Amangkurat II had many wives, but only one child, Sutikna (later Amangkurat III). According to the Babad Tanah Jawi, Sutikna's mother had used magic on Amangkurat II's wives to make them unable to conceive.

Rahmat was raised in Surabaya. He then moved to the Plered Palace as adipati anom (crown prince). However, his relationship with his brother, Prince Singasari, worsened. There was also news that the position of crown prince would be transferred to Prince Singasari.

In 1661, Rahmat rebelled against his father, supported by the anti-Amangkurat I faction. The small rebellion was suppressed but Amangkurat I unsuccessfully poisoned Rahmat in 1663, thus worsening their relations.

In 1668, Rahmat fell in love with Rara Oyi, a Surabayan girl who would become his father's concubine. Pangeran Pekik abducted her to be married to Rahmat. This made Amangkurat I angry and so he murdered Pangeran Pekik along with his family. Rahmat was pardoned after he was forced to murder Rara Oyi.

Amangkurat I also relinquished the position of crown prince from Rahmat, and transferred it to Prince Puger (future Pakubuwono I).