Kanjeng Raden Mas Tumenggung Wongsonegoro (20 April 1895[1][a] – 4 March 1974[3][b]) was an Indonesian politician who served in various offices, including as deputy prime minister and governor of Central Java.

[7] After the Proclamation of Indonesian Independence, Wongsonegoro took office Fuko Syutjokan, a position at the provincial level during the Japanese occupation, in Semarang.

On 19 August 1945, Wongsonegoro announced over the radio that all power over the Semarang area was declared to be included in the territory of the Republic of Indonesia.

[8] The following year he replaced Abdoel Gaffar Pringgodigdo as Minister of Justice during the Natsir Cabinet, serving from 6 September 1950 to 27 April 1951.

[12] Communist Party leader Dipa Nusantara Aidit, a hearty supporter of Wongsonegoro, spoke extremely softly (and thus, in Javanese culture, politely) to him at public meetings, to the point that at times the formateur "was obliged to ask another participant to be [Adiet's] microphone".

[13] When he eventually finished forming the cabinet on 31 July 1953, he had lost support from Christian political parties and Masyumi, replacing their candidates with minor and communist-sympathizing groups.

His body was buried in the Kendaran Palace Family Cemetery in Tirip Village, Sukoharjo, Surakarta.

[3] At the location of his grave, there is a monument with the phrase "Janma Luwih Hambuka Tunggal," which means that people who have more ability will always be closer to the Creator.