Appellate Practice Commercial Litigation Environmental Law
*Named the "Lawyer of the Year" in this practice area in the 2026 edition in Phoenix.
DJ 
Diane M. Johnsen
Recognized in Best Lawyers since 2005 Awarded Practice Areas
Biography
Diane M. Johnsen is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Commercial Litigation and Environmental Law.
Diane M., who practices law in Phoenix, Arizona, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Diane M. is held by other top lawyers in the same geographic and legal practice area.
Overview
- Duke University, J.D., graduated 2016
- Duke University, J.D., graduated 2016
Client Testimonials
Awards & Focus
Named "Lawyer of the Year" by Best Lawyers® for:
- Appellate Practice, Phoenix (2026)
Recognized in The Best Lawyers in America® 2026 for work in:
- Appellate Practice
- Commercial Litigation
- Environmental Law
Special Focus:
- Environmental
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