Derek John Christopher Byrne

Derek Byrne S.P.S. (born 17 January 1948) is an Irish prelate of the Catholic Church and a member of the St. Patrick's Missionary Society (Kiltegan Fathers) who was bishop of Primavera do Leste–Paranatinga in Brazil from 2014 to 2023. He was bishop of Guiratinga, Brazil from 2008 to 2014.

Biography
Derek John Christopher Byrne was born on 17 January 1948 in Monkstown, County Dublin. He attended Newbridge College.

He studied at University College Cork, earning a BA in Philosophy and Theological Studies in St. Patrick's College, Kiltegan, where he was ordained a priest in 1973. Following ordination, he went to Brazil, where he served until 1980. He worked in the US and Ireland in fundraising and leadership positions before going back to Brazil in 2003 as parish priest of Castanheira in the state of Mato Grosso.

On 24 December 2008, Pope Benedict XVI appointed him bishop of Guiratinga in Brazil. He received his episcopal consecration on 23 March 2009.

On 25 June 2014, upon the creation of the new diocese of Primavera do Leste-Paranatinga in Brazil, Pope Francis named Byrne its first bishop.

Pope Francis accepted his resignation on 7 June 2023.