R. Walker Nickless

Ralph Walker Nickless ( born May 28, 1947 in Denver, Colorado) is Roman Catholic Bishop of Sioux City.

Nickless is one of ten children of R. Walker Nickless and E. Margaret McGovern Nickless. He was ordained on August 4, 1973 Priests of the Archdiocese of Denver. He was vicar general of the Archdiocese of Denver.

To the Bishop of Sioux City Pope Benedict XVI appointed him. . November 10, 2005 The Episcopal ordination he gave on January 20, 2006, the Archbishop of Dubuque, Jerome George Hanus, (OSB ); Co-consecrators were Charles Joseph Chaput, ( OFM Cap. ), The Archbishop of Denver and Thomas Joseph Tobin, Bishop of Providence.