Adnan Buyung Nasution, also known as Adnan Bahrum Nasution[2] (20 July 1934 – 23 September 2015) was an Indonesian lawyer, advocate, and activist.

Nasution founded the Legal Aid Institute in Indonesia.

[3] He was well known as a human rights and pro-democracy activist during the reign of Indonesia's late President Suharto.

One of the partners at his law firm was former Chief Justice of the Supreme Court of Indonesia Suryadi.

[4] From the years 2007 to 2009, Nasution was a member of the Presidential Advisory Council's Legal Department.