William G. Montgomery
Education and employment
Prior to Justice William G. Montgomery’s appointment to the Arizona Supreme Court in 2019, he served as the Maricopa County Attorney beginning with a special election in 2010. Before assuming elected office, Justice Montgomery served as a Deputy County Attorney, as well as practicing civil law with a local insurance defense firm and advocacy work on behalf of victims of crime. Justice Montgomery earned a B.S. degree and received a commission as a Second Lieutenant in the Army from the United States Military Academy at West Point in 1989. He received his law degree from Arizona State University in 2001.
Judicial record
167 opinions where William G. Montgomery sat on the panel, spanning 2020–2026.
By court
By disposition
Panel votes per year
How William G. Montgomery's panel-seat count has shifted year by year.
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- William G. Montgomery
Most-frequent co-panelists
Judges who appeared on the same opinions, ranked by overlap count. Click compare to overlay them on the chart above.
- John R. Lopez IV 159 shared compare
- Ann A. Scott Timmer 155 shared compare
- James P. Beene 153 shared compare
- Clint Bolick 152 shared compare
- Robert M. Brutinel 116 shared compare
- Kathryn H. King 92 shared compare
- Andrew W. Gould 26 shared compare
- Maria Elena Cruz 12 shared compare
- Garye L. Vásquez 2 shared compare
- Peter J. Eckerstrom 2 shared compare
Recent opinions
15 most recent opinions where William G. Montgomery sat on the panel.
| Docket | Court | Filed | Disposition | Case |
|---|---|---|---|---|
| CV-25-0089-PR | Ariz. | 2026-07-17 | Affirmed in part | REPUBLICAN NATL COMMITTEE v. FONTES |
| CV-25-0116-PR | Ariz. | 2026-07-17 | Reversed in part and remanded | Gelvin v. Hon. parker/gelvin |
| CV-25-0033-PR | Ariz. | 2026-07-17 | Reversed and remanded | GOLDWATER v. PHOENIX |
| CV-25-0009-PR | Ariz. | 2026-07-07 | Affirmed | MAYWALD v. TOYOTA |
| CV-24-0140-PR | Ariz. | 2026-07-06 | Affirmed | State Farm v. Balzan |
| CV-24-0295-PR | Ariz. | 2026-06-29 | Affirmed in part, reversed in part, remanded | CENTER FOR AZ v. AZ SECRETARY OF STATE |
| CV-25-0036-PR | Ariz. | 2026-06-17 | Reversed and remanded | MARKHAM v. CAHAVA |
| CR-24-0237-PR | Ariz. | 2026-05-15 | Affirmed | State of Arizona v. Dimitri Polanco Romero |
| CV-24-0267-PR | Ariz. | 2026-04-28 | Vacated | Chandler v. Roosevelt |
| CV-25-0161-PR | Ariz. | 2026-04-27 | Vacated and remanded | Briana Hernandez v. Luis Arturo Loarca |
| CV-24-0288-PR | Ariz. | 2026-03-03 | Reversed and remanded | 9w Halo v. Ador |
| CV-24-0275-PR | Ariz. | 2026-02-11 | Affirmed | In Re: Mh2023-004502 |
| CR-24-0300-PR | Ariz. | 2026-01-30 | Reversed and remanded | State of Arizona v. Hon. marner/haniffa |
| CR-24-0064-PR | Ariz. | 2025-12-12 | Reversed | State of Arizona v. hon.gordon/owen |
| CV-24-0220-T/AP | Ariz. | 2025-12-04 | Affirmed | Knight v. Fontes |