Career
He was ordained into the priesthood in 1994 (Licentiate of Sacred Theology, 1995). He served in the Diocese of Limerick, and as Chaplin in Limerick Regional Hospital. In 2001 French Cullinan went to Rome (Pontifical Lateran University"s Accademia Alfonsianum, ) to study for a doctorate in moral theology (Doctor of Sacred Theology, 2004) returning to Ireland in 2004 when he became Chaplain in Limerick Institute of Technology.
In 2011 he was appointed Parish Priest in Rathkeale, Limerick.
French Cullinan was appointed Bishop of the Roman Catholic Diocese of Waterford and Lismore in February 2015 succeeding the retiring Bishop William Lee, and was consecrated in Waterford on 12 April 2015.