Gordon Muortat Mayen Maborjok (1922–2008) was a South Sudanese veteran politician and an advocate for the rights and freedom of the South Sudanese people. He was the President of the Nile Provisional Government (NPG) which led Anyanya I; Southern Sudan's first armed resistance to Khartoum which started in 1955. Muortat also served as Vice-President of the Southern Front (SF) and Foreign Minister in the Southern Sudan Provisional Government (SSPG).