Stephen Nyodho Ador Majwok (born 1 January 1973) is a South Sudanese prelate of the Catholic Church who is the Bishop of the Roman Catholic Diocese of Malakal, in South Sudan since 23 May 2019. Before then, from 15 May 2005 until he was appointed bishop, he was a priest of the same Catholic diocese. He was appointed bishop by Pope Francis. He was consecrated bishop on 28 July 2019, at Christ the King Cathedral, in Malakal.
He was born on 1 January 1973, at Andong, Diocese of Malakal, Upper Nile State, in South Sudan. From 1982 until 1989, he attended primary schools in Adong and Thawrat Malakal. From 1990 until 1977 he studied at the Saint Lwanga Institute. He studied Philosophy at the Saint Paul National Major Seminary in Khartoum, Sudan from 1997 until 2000, graduating with a Diploma in Philosophy. He continued his studies at the same seminary from 2000 until 2005, while studying Theology. In 2004, he graduated with a Bachelor's degree in Sacred Theology. He holds a Licentiate in Moral Theology, obtained from the Pontifical Urban University, in Rome, where he studied from 2013 until 2016. His Doctorate in Moral Theology was awarded by the Pontifical University of St. Thomas Aquinas, in Rome, where he studied from 2016 until 2018.
He was ordained a deacon for the Diocese of Malakal on 14 November 2004. On 15 May 2005, he was ordained a priest for the same Catholic diocese. He served as a priest until 23 May 2019. While a priest, he served in various roles and locations including as:
On 23 May 2019, Pope Francis appointed the Reverend Father Stephen Nyodho Ador Majwok, of the clergy of Malakal, previously Vicar General of the same diocese as the Bishop of the Diocese of Malakal, South Sudan. He was consecrated bishop at Christ the King Cathedral in Malakal on 28 July 2019 by Paulino Lukudu Loro, Archbishop of Juba assisted by Hubertus Matheus Maria van Megen, Titular Archbishop of Novaliciana and Michael Didi Adgum Mangoria, Archbishop of Khartoum. In December 2022 he condemned violence among the people in his episcopal diocese and "called for peace and unity among the various communities".