John Engle Miller III (born 1949) is an American marine biologist and retired bishop of the Anglican Church in North America.

While there, he and his wife Joyce were spiritually influenced by the discipleship ministry of Thad and Erilynne Barnum in Aliquippa.

[2] Miller served as assistant rector and school chaplain at Holy Trinity Episcopal Church in Melbourne, Florida, in 1994, and as priest in charge from 1994 to 1996.

"[6] 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.

From 2019 to 2020, he was interim bishop of the Diocese of the Great Lakes during the episcopal vacancy between Ronald Jackson and Mark Engel.

[11] 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.