Here are the Top 10 alternative dispute resolution law firms in Arizona, based on public voting for the 2026 edition of Ranking Arizona, the state’s biggest and most comprehensive business opinion poll. Ranking Arizona is based purely on opinion and ranks companies based on how voters answer this simple question: with whom would you recommend doing business?
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Top 10 alternative dispute resolution law firms in Arizona
Here are the Top 10 alternative dispute resolution law firms in Arizona, as featured in the 2026 edition of Ranking Arizona:
1. Sacks Tierney
Background: The Alternative Dispute Resolution (ADR) team of David Tierney, Sharon Shively, and Greg Gillis validates Sacks Tierney’s 10th consecutive No. 1 ranking. All three have been selected by Best Lawyers® and serve or have served on the American Arbitration Association’s (AAA) construction and commercial arbitration and mediation panels. David Tierney, a veteran litigator and past chair of the State Bar’s ADR Section, mediates and arbitrates a broad range of business and construction disputes. Sharon Shively serves as a mediator and arbitrator in complex matters involving construction, creditors’ rights, real estate, and commercial disputes. Greg Gillis brings extensive experience in litigating, mediating, and arbitrating construction and commercial disputes, and is a past chair of the State Bar’s ADR Section.
2. Markson Mediation
3. MacQueen Mediation
4. Gammage & Burnham
5. Snell & Wilmer
6. Dickinson Wright
7. Clark Hill
8. Gust Rosenfeld
9. May, Potenza, Baran & Gillespie
10. Fennemore
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