Mangaradja Soangkoepon

Maharadja Soeangkoepon portrait from De Indische Courant, 1941

Abdoel Firman Siregar gelar Mangaradja Soangkoepon (1885–1946, Perfected Spelling: Abdul Firman Siregar gelar Mangaraja Soangkupon) was a politician and Volksraad member in the Dutch East Indies. He was an Indonesian nationalist and was a political ally of many of the leaders who came to power in the early independence era, although he himself died before the country achieved its independence.