Munggu Antan is an inscription in the Old Javanese language in the form of a stone stele found in the village of Bulus, Purworejo Regency, which was once included in the Kedu Residency (now in Central Java, Indonesia).
This inscription contains the designation of the village Munggu Antan as a sima (a revenue-diverted area), becoming the domain of a Buddhist monastery (vihāra) in Gusali.
This inscription was issued on 9 February 887[1] by the official (sang pamegat) of Munggu and his younger sister Sang Hadyan Palutungan, who was also the wife of the 'deity who rests at Pastika' (a deceased king), at the behest of the reigning king Bhadra, lord of Gurunwangi.
[2][3] Only four days after this inscription was issued, King Bhadra is said to have fled the palace, ushering in a period of contested leadership that lasted until 894.
[4]: 24–25 Currently the inscription is stored at the National Museum of Indonesia, with an inventory collection number D.