John Miller

John Engle Miller III (born 1949) is an American marine biologist and retired bishop of the Anglican Church in North America. He is a former Episcopal priest who played an active role in the Anglican realignment in the United States. Consecrated in 2008 to serve as a bishop in the Anglican Mission in the Americas, Miller later served as assisting bishop in the Gulf Atlantic Diocese and provided interim support during episcopal vacancies and leaves of absence in the Anglican Diocese of the Great Lakes and the Anglican Diocese of the Upper Midwest.

Early life, education, and marine biology career Miller is a native of Easton, Pennsylvania. He received his B.A. in zoology from the University of South Florida, where he also did graduate studies in marine biology in 1965. Miller worked as a marine biologist at the Smithsonian Institution in Washington and the Harbor Branch Oceanographic Institute in Fort Pierce, Florida, for eighteen years. His research was conducted from Bermuda to Antarctica and throughout the Caribbean Sea. By 2008, Prince of Peace Anglican had grown to 400 members. Miller oversaw a network of more than 30 AMIA congregations in Florida, Georgia, and Alabama while remaining rector of Prince of Peace, as was customary for AMIA bishops. By the next year, the relationship between AMIA chairman Murphy and the Anglican Church of Rwanda's house of bishops, led by Kolini's successor Onesphore Rwaje, had broken down over questions of financial transparency and collegiality. Except for Glenn and Barnum, the AMIA bishops removed AMIA from Rwandan jurisdiction and restructured it as a "missionary society." In the fallout from AMIA's break with ACNA and Rwanda, some AMIA bishops—including Miller—transitioned directly into the ACNA. In 2017, Miller presided over the dedication of a new 27,000-square-foot facility for Christ Church, and in 2019, he retired as rector of Christ Church. From 2021 to 2022, after allegations of mishandling of abuse reports, Miller was acting bishop in the Diocese of the Upper Midwest, appointed by ACNA Primate Foley Beach and with delegated authority from the UMD's Bishop's Council during Stewart Ruch's leave of absence.

Miller also serves as a "soul care" counselor for clergy in partnership with Thad Barnum.