Kanjeng Gusti Pangeran Adipati Arya Mangkunegara VIII (Kartasura, 7 April 1925 – Surakarta, 2 August 1987) was an Indonesian politician, and the eighth and last sovereign Duke of Mangkunegaran, who reigned from 1944 until his death in 1987.

He experienced the Dutch colonial period and the beginning of Indonesia's independence.

Mangkunagara VIII faced extreme difficulty in maintaining the sovereignty of his state.

As a result, the state of Surakarta (including Mangkunagaran) were incorporated into the province of Central Java in 1950.

Mangkunagara VIII died in 1987 and was succeeded by his third child and second son as Mangkunegara IX.