Kevin William Vann (born May 10, 1951) is an American prelate of the Roman Catholic Church who has been serving as bishop of the Diocese of Orange in Southern California since 2012.

[2] William was a postal worker and Theresa a nurse and clinical instructor at St. John's Hospital in Springfield.

He was awarded a Doctor of Canon Law degree from the Pontifical University of St. Thomas Aquinas in Rome in early 1985.

[4][5] After Vann's return to Springfield in 1985, the diocese assigned him as parochial vicar at Blessed Sacrament Parish.

During his tenure at Blessed Sacrament, he oversaw a $2.2 million capital campaign for refurbishing the church, as part of its 75th anniversary celebration.

[2] Vann selected as his episcopal motto In Fide Et Dileccione In Christo Iesu, "In the faith and love in Christ Jesus".

Originally serving as the Crystal Cathedral, the diocese purchased the building in early 2012 from the bankrupt Robert Schuller ministries.