Attorney Directory

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William P. Ring - County Attorney

Bill Ring was elected as Coconino County on November 8, 2016 and he took office on January 6, 2017. Previously, Mr. Ring served for 15 years in the Coconino County Attorney’s Office in every position common to deputy county attorneys including juvenile, misdemeanor and felony prosecutor and, most often, as a civil deputy and Senior Civil Attorney.
Mr. Ring began his career with the Coconino County Attorney in 1989 and has served under prior County Attorneys, the honorable Mr. Verkamp, Mr. Hance, and Mr. Rozema.

Mr. Ring is a strong advocate for improving the safety of Communities through the vigorous and fair application of the law, and for ethical and effective public service from the dedicated members of the Coconino County Attorneys Office. Mr. Ring is admitted to practice law in the State of Arizona and the Supreme Court of the United States, the Ninth Circuit Court of Appeals, and the District Courts of Arizona.

Mr. Ring is a graduate of the University of Rochester with a degree in Religious Studies (B.A., 1983) and a Master’s Degree in Education (M.S. Ed., 1985). He is a graduate of the University of Arizona’s Rogers College of Law (J.D., 1989). He has been active in a variety of civic leadership groups including the Coconino County Bar Association (past-President), and is a past-Board Member to the Coconino County Sustainable Economic Development Initiative, the Northern Arizona Builders Association and the Greater Flagstaff Chamber of Commerce. Mr. Ring is a graduate of the inaugural Flinn-Brown Foundation’s Civic Leadership Academy and he will continue to provide leadership skills and qualities to the Coconino County Attorneys Office.

Mr. Ring and his wife have lived in Flagstaff for 28 continuous years and raised their children in Flagstaff. The children are pursuing undergraduate and graduate work in engineering, philosophy and medicine.
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Ammon Barker - Chief Deputy

Ammon Barker has dedicated his career to pursuing and promoting justice on behalf of the people of Arizona. For over a decade at the Coconino County Attorney’s Office, he has prosecuted cases involving murder, criminal street gangs, and sexual offenses. Over the years, Mr. Barker has overseen the operation of treatment courts for the County Attorney’s Office, and he continues to seek options for criminal offenders that will reduce recidivism while keeping our communities safe.

Mr. Barker is a dedicated trial attorney, and in 2014 he was recognized as the Arizona Felony Prosecutor of the Year by the Arizona Prosecuting Attorneys’ Advisory Council. In 2016, he was asked to serve as a Senior Deputy Attorney and supervise attorneys prosecuting felony offenders. In November 2021, he was appointed Chief Deputy County Attorney, and is responsible for managing an office of approximately 20 attorneys and 30 legal paraprofessionals.

Over the course of his career, Mr. Barker has been asked to train and mentor other lawyers. He has a passion for teaching and has taught for the Arizona Prosecuting Attorneys’ Advisory Council, the Arizona Bar Association, Coconino Community College, and Northern Arizona University. He also regularly trains local law enforcement agencies regarding their constitutional duties. 

When he is not engaged in any of the above activities, he volunteers his time with the State Bar. In July 2020, he was appointed to serve on the Commission for Appellate Court Appointments, which assists the Governor in the selection of judges to the Court of Appeals and Arizona Supreme Court. He also currently serves as vice co-chair for the Criminal Practice and Procedure Committee.

Mr. Barker earned his Bachelor of Arts degree from Brigham Young University and his Juris Doctor from the Sandra Day O’Connor School of Law (ASU).