--- title: "John G. Fenn | KnowJudges" canonical: "https://knowjudges.com/kyj/judge/john-g-fenn-justice-wyoming-supreme-court-wy" page_type: "judge_profile" updated: "2026-10-07" --- # John G. Fenn Wyoming Supreme Court · Justice ## Profile - Court: Wyoming Supreme Court - State: Wyoming - Role: Justice - Service status: active - Last verified: 2026-08-22 ## Summary Official statewide and applicable court procedural guidance applies to this judge. ## Biography ### Professional career - American lawyer and jurist who has held the role of a justice of the Wyoming Supreme Court since January 17, 2022, after a long career in Wyoming state courts and legal practice. - 2022–present: Justice of the Wyoming Supreme Court, appointed by Governor Mark Gordon on December 2, 2021, to replace Justice Michael K. Davis - 2007–2022: Judge of the Wyoming Fourth Judicial District Court, covering Sheridan and Johnson counties - Previously Fourth Judicial District judge in Sheridan, 2007-2021, and Yonkee & Toner practitioner - Attorney, Yonkee & Toner LLP; 1993-2006 - Before entering the judiciary, Fenn practiced law and was a partner at Yonkee & Toner from 1993 to 2006. - As a justice, Fenn participates in the court’s function as the final arbiter of Wyoming state law cases, hears appeals from district courts, and helps shape binding precedent for the state ### Education - University of Wyoming College of Law — J.D. (1993) - Master of Engineering — Air Force Institute of Technology — 1989 - M.Eng. — Air Force Institute of Technology — 1989 - M.S. in Engineering from the Air Force Institute of Technology (1989) - University of Wyoming — B.S. (1984) - B.A. in Mechanical Engineering from the University of Wyoming (1984) ### Additional information - In summary, John G. Fenn is a veteran Wyoming jurist with a background in engineering, law, and state court service, now serving on the state’s highest court and re-elected in 2024. - Sworn in January 18, 2022. - 2019–2022: Played a role in developing Wyoming’s chancery court system. - Fenn’s appointment followed a nomination process in which he was one of three candidates recommended to the governor. - Justices serve eight-year terms and must be retained by voters after one year in office. - John G. Fenn grew up in Big Piney, Wyoming, and graduated from Big Piney High School. ## Before you appear - Read the judge-specific standing order first when one is listed. - Check the docket and case orders for requirements that supersede broader guidance. - Confirm current remote-access and courtroom technology arrangements before the proceeding. ## Courtroom Rules ### cameras and communication devices Scope: courtwide Wyoming Supreme Court Rule 5 restricts recording and wireless device use during its proceedings. Counsel may use muted internet-capable laptops at counsel table unless otherwise ordered; other wireless devices require express permission. Evidence excerpt: Use of Cameras: Communication Devices (Rule 5. of Rules of Sup. Court). [Use of Cameras: Communication Devices, Rule 5 of the Rules of the Supreme Court](https://www.wyocourts.gov/supreme-court) Source checked: 2026-07-29 ## Sources - [Official profile](https://www.wyocourts.gov/supreme-court/) - [Official roster](https://www.wyocourts.gov/supreme-court/) - [Wyoming Judicial Branch official judicial roster](https://www.wyocourts.gov/supreme-court/) - [Use of Cameras: Communication Devices, Rule 5 of the Rules of the Supreme Court](https://www.wyocourts.gov/supreme-court) - [Wikidata: John G. Fenn](https://www.wikidata.org/wiki/Q110594843) - [Wyoming Supreme Court official biography: John G. Fenn](https://www.wyocourts.gov/supreme-court/) - [Wyoming Supreme Court current justices and official biographies](https://www.wyocourts.gov/supreme-court/) - [Rules of the Supreme Court of Wyoming, Rule 5](https://www.wyocourts.gov/app/uploads/2025/03/Use-of-CamerasCommunication-Devices-Rule-5.-of-Rules-of-Sup.-Court.pdf) - [Wikidata: John G. Fenn](https://www.wikidata.org/wiki/Q110594843) - [Wyoming Supreme Court official biography: John G. Fenn](https://www.wyocourts.gov/supreme-court/) ## JSON-LD ```json { "@context": "https://schema.org", "@graph": [ { "@type": "WebPage", "@id": "https://knowjudges.com/kyj/judge/john-g-fenn-justice-wyoming-supreme-court-wy", "url": "https://knowjudges.com/kyj/judge/john-g-fenn-justice-wyoming-supreme-court-wy", "name": "John G. Fenn | KnowJudges", "description": "John G. Fenn, Wyoming Supreme Court. Source-linked judicial identity, courtroom procedures, and presentation guidance.", "dateModified": "2026-10-07", "isPartOf": { "@id": "https://knowjudges.com/#website" }, "mainEntity": { "@id": "https://knowjudges.com/kyj/judge/john-g-fenn-justice-wyoming-supreme-court-wy#judge" } }, { "@type": "Person", "@id": "https://knowjudges.com/kyj/judge/john-g-fenn-justice-wyoming-supreme-court-wy#judge", "name": "John G. 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