Magnus Mwalunyungu was a Roman Catholic prelate who served as the Bishop of the Roman Catholic Diocese of Tunduru-Masasi, Tanzania from 1992 until his retirement in 2005. He was appointed bishop on 30 March 1992 by Pope John Paul II. Bishop Magnus Mwalunyungu died on 13 February 2015 as Bishop Emeritus of Tunduru-Masasi, Tanzania at the age of 84 years.