Masjid Wustho Mangkunegaran, Royal mosque near Mangkunegaran Palace in Surakarta, Indonesia

Masjid Wustho Mangkunegaran is a mosque on Jalan Kartini, west of Mangkunegaran Palace in Surakarta, built on a 4,200-square-metre plot. Its main building uses the Javanese tajug roof type, with a three-tiered roof supported by four saka guru and twelve saka rawa posts. An east porch features a tratag rambat decorated with calligraphic wall panels, and a pawastren room on the south side serves women for Friday prayer.

Construction began in 1878 and the building reached completion in 1918, with architect Thomas Karsten overseeing renovations during the colonial period. These works show how colonial architectural influences shaped the design of this Islamic structure.

The name Wustho was given in 1949 by Raden Tumenggung K.H. Imam Rosidi, head takmir of the Mangkunegaran palace; before that the building was simply called Masjid Mangkunegaran. During the kirab pusaka procession at the Javanese New Year on the eve of 1 Sura, Qur'anic verses are recited in the mosque.

The mosque stands on Jalan Kartini, about 60 metres west of Mangkunegaran Palace, in Ketelan, Banjarsari. It opened to the public in 1924, so visitors of any faith may enter outside prayer times. Look for the marble plaque on the northeast wall, inscribed in Arabic and Javanese, which records the construction of the mosque and its tower.

The marble plaque on the northeast wall records the construction in Arabic and Javanese, giving dates in both calendars: 1807 Javanese (1878 CE) for the first stone, 1847 (1917) for the second, and 1855 (1924) for the minaret. The Javanese text calls the minaret work 'nata pawisikan samadyaning praja'.