Abdul Rasjid Siregar gelar Mangaradja Mahkota Soeangkoepon, commonly known as Dr. Abdul Rasjid, was a politician and physician in the Dutch East Indies. He was elected or appointed to the Volksraad from 1931 to 1942, during which time he sat with the Indonesian nationalist faction. During the 1930s, he became convinced that public health and cooperation with traditional healers should be central to the mission of physicians in the Indies.

Abdoel Firman Siregar gelar Mangaradja Soangkoepon 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.