Walter Mitchell (September 13, 1876 – May 27, 1971) was the Bishop of Arizona in The Episcopal Church in the United States from 1926 until 1946.

Mitchell was ordained deacon on June 24, 1902, by Thomas F. Gailor, Bishop of Tennessee and served as Deacon-in-charge of St Jude's Church in Monroe City, Missouri.

He was rector of the Church of St John the Baptist in San Juan, Puerto Rico between 1904 till 1906.

He also subsequently served as rector of the Porter Military Academy in Charleston, South Carolina.

On August 18, 1931, Bishop Mitchell bought the Arizona Church Conference Center.