William Morris Barker (May 12, 1854 – February 21, 1901) was bishop of the Episcopal Diocese of Olympia from 1894 to 1901.

He then taught at Bishop Scott Grammar School in Portland, Oregon, until 1879.

[1] Barker was ordained deacon on June 14, 1879, in Holy Trinity Church, Middletown, Connecticut, by Bishop John Williams of Connecticut, and then priest on February 15, 1880, by Bishop William Croswell Doane of Albany.

He remained there until 1887 when he accepted the rectorship of St Luke's Church in Baltimore.

[2] William Morris Barker was elected by the House of Bishops as Missionary Bishop of Western Colorado on October 22, 1892, and consecrated on January 25, 1893, at St Paul's Church in Duluth, Minnesota.