John Curtis Iffert (born November 23, 1967) is an American prelate of the Roman Catholic Church who has been serving as bishop for the Diocese of Covington in Kentucky since 2021.
[3][4] After his 1997 ordination, the diocese assigned Iffert as the parochial vicar of the Cathedral of St. Peter Parish in Belleville, Illinois.
[4] The Dominican in 2007 appointed Iffert as parish vicar of the St. Thomas Aquinas Catholic Center at Purdue University in West Lafayette, Indiana.
[3] The diocese appointed Iffert as pastor of St. Mary Immaculate Conception in 2010, a job he would hold for the next ten years.
In 2020, Bishop Michael McGovern named Iffert as vicar general for the diocese; he was also moved to St. Stephen Parish in Caseyville, Illinois.