Fangak County is an administrative area of Jonglei State in the Greater Upper Nile region of South Sudan, with headquarters in the town of Phom el Zaraf.

[2] The Zeraf island, in which the town of Old Fangak is located, comprises a large part of the county.

The people are agro-pastoralist, growing crops for personal use and for sale by traditional agricultural techniques and raising cattle.

[2] In February 2011, forces loyal to the rebel General George Athor attacked three operational outposts of the Sudan People's Liberation Army (SPLA).

[5] In June 2011 James Maluit Ruach, Commissioner of Fangak County, said that the security situation was under control but that Athor's forces had sown land mines, which urgently needed to be cleared.