Pakubuwono VIII (the other name's Bandara Radin Mas Kuseini)(also transliterated Pakubuwana VIII) (born 20 April 1789 – ruled 1858 until 28 December 1861) was the seventh Susuhunan (ruler of Surakarta) from 1858 to 1861. He was the elder brother of Pakubuwano VII.
Pakubuwana VIII ascended the throne on August 17, 1858, succeeding his half-brother, Pakubuwana VII, who had passed away the previous month. He took the throne at an advanced age of 69, as Pakubuwana VII had died without a crown prince. Notably, he was the first monarch of the House of Mataram who did not practice polygamy.
His reign lasted only three years until his death, making him the shortest-reigning ruler of Surakarta. Pakubuwana VIII was succeeded by the son of Pakubuwana VI, who took the title Pakubuwana IX as the next Susuhunan of Surakarta.