Daniel Joseph Mullins (born 10 July 1929) was a Roman Catholic prelate who served as the Bishop of Menevia from 1987 to 2001.
Born in Kilfinane, County Limerick, Ireland on 10 July 1929, he was ordained to the priesthood on 12 April 1953. He was educated in Mount Mellery, Waterford, and then St Mary's College, Aberystwyth, where he also learnt Welsh, and also University College Cardiff. He was appointed an auxiliary bishop of Cardiff and Titular Bishop of Sidnacestre on 5 February 1970. His consecration to the Episcopate took place on 1 April 1970, the principal consecrator was Archbishop John Murphy of Cardiff, and the principal co-consecrators were Archbishop George Dwyer of Birmingham and Bishop John Petit of Menevia. He was appointed the Bishop of Menevia on 12 February 1987.
Mullins made an effective attempt to master the Welsh language.
He is the brother of Canon Edmund Mullins also went to Wales to serve as a priest.
He resigned on 12 June 2001 and assumed the title Bishop Emeritus of Menevia.