The Ruweng Administrative Area is an administrative area in South Sudan. The area was known as Ruweng State between 2 October 2015 and 22 February 2020 when it was a state of South Sudan.

On 1 October 2015, President Salva Kiir issued a decree establishing 28 states instead of the 10 constitutionally established states. The decree established the new states largely along ethnic lines. Several opposition parties and civil society groups challenged the decree's constitutionality. Kiir later resolved to take it to parliament for approval as a constitutional amendment. In November the South Sudanese parliament empowered President Kiir to create new states. Mayol Kur Akuei was appointed governor in 2015.

On 16 June 2022, President Salva Kiir appointed a new chief administrator.

On 8 June 2021, President Salva Kiir appointed a new chief administrator.

The Ruweng Administrative Area is located in the northern part of South Sudan and its headquarters is at Pariang. It borders the former Upper Nile State in the east and Jonglei State in the southeast, Unity State in the south, Warrap State in the southwest, Abyei to the northwest, and Sudan in the north.

It is the most oil-producing area in South Sudan. About 80% of South Sudanese oil is produced here, mainly in the Unity / Darbim oil field (in the southern part), Heglig / Panthou oil field (in the north-western part), Tomasouth/Kaloj oilfield (in the western part), Toor / Athony oil field or, Labob / Miading and Munga / Wanhe Danluel oilfield, Maan Awal, and other fields.

Ruweng is rich in animal resources and fish resources, and it also is the home of two lakes: Lake Jau (in the northern part) and Lake No locally known as Dhoo (in the southern part), where Bahr el Ghazal River ends and joins the White Nile. Ruweng is rich in agricultural land and wildlife.

Ruweng is the home of Ruweng Dinkas, who are Panaruu Dinka with 12 sub-tribes, and Aloor or Ruweng Biemnom Dinka with six sub-tribes.