The Honorable James E. Marner is a United States Magistrate Judge for the District of Arizona, based in Tucson, appointed to the federal bench on April 2, 2025, for an eight-year term. Before his federal appointment, Judge Marner served as a judge for the Pima County, Arizona Superior Court from 2012 to 2025 — a 13-year tenure on the state trial bench during which he presided over a broad range of civil and criminal matters. Prior to taking the bench, he served as a trial attorney at the King County Prosecutor’s Office in Seattle, Washington, and then spent 15 years as a civil trial attorney in Pima County, Arizona — building a litigation record on both the criminal prosecution and civil trial sides before transitioning to the judiciary.