Betsy J. Lamm

Betsy J. Lamm


BETSY J. LAMM joined CDQ in 2008, following a judicial clerkship for the Honorable Chief Justice Ruth V. McGregor of the Arizona Supreme Court.  Betsy has practiced at the firm her entire professional career.

Betsy’s practice focuses on complex commercial litigation, including appeals.  Betsy routinely handles complex legal issues and litigation positions for clients in the private and public section.  Her cases have involved a wide spectrum of issues, ranging from breach of contract, defamation, breach of fiduciary duty, conspiracy and business disputes to Section 1983, Title IX and Title VII claims.  Betsy has litigated cases through all stages of trial.  Betsy also has significant appellate experience, representing clients on appeal before Arizona’s appellate courts, the Federal Circuit Court of Appeals, the Ninth Circuit Court of Appeal and the United States Supreme Court.  Betsy has successfully handled oral argument on novel legal issues before the Arizona Court of Appeals and the Ninth Circuit.

Betsy is also an active member of her community, serving as a court-appointed member of the Foster Care Review Board in Maricopa County since 2016 and spending time volunteering at her children’s elementary and middle schools.

Named to the Super Lawyers®  list of Rising Stars in Business Litigation, 2014-2022
Named to the Super Lawyers®  list, 2023

Sandra Day O’Connor College of Law
Arizona State University
J.D., summa cum laude, 2007

  • Senior Note and Comment Editor, Arizona State Law Journal
  • Outstanding Female Graduate
  • Order of the Coif
  • Order of the Barristers

Arizona State University
B.A., Mathematics, summa cum laude, 2004
African American Studies minor

United States District Court, District of Arizona
Ninth Circuit Court of Appeals
Federal Circuit Court of Appeals
United States Supreme Court

State Bar of Arizona
Maricopa County Bar Association
American Bar Association

Unprotected Sex: The Arizona Civil Rights Act’s Exclusion of Sexual Minorities, 38 ARIZ. ST. L.J. 1139 (2006)
Ethics and the Bar: An Analysis of the Arizona Supreme Court’s 2005/2006 Decisions, 39 ARIZ. ST. L.J. 613 (2007)

“Attorney Ethical Considerations in the University Setting,” University of Arizona

Betsy is a member of the Foster Care Review Board (“FCRB”) in Maricopa County, Arizona, a citizens’ review board created by the Arizona statute to advise Arizona’s juvenile court system on progress toward achieving permanent, safe placements for children in foster care.  Members of the FCRB are appointed by the Presiding Juvenile Court Judge in Maricopa County to serve three-year terms.  Betsy has served as a member of the FCRB since her initial appointment in 2016, with reappointments in 2019, 2021, and 2024.  Betsy has also served as a screening interviewer for the American Bar Association’s Judicial Intern Opportunity Program (“JIOP”)  since 2009, repeatedly participating in the Phoenix JIOP annual orientations, and serving as a formal JIOP mentor from 2009 to 2014.  Betsy also encourages her two children to take action in their community, most recently preparing hygiene and cleaning kits with her children to donate to the Welcome to America Project (, an organization dedicated to assisting refugee families resettling in Arizona.  Finally, time permitting, Betsy enjoys volunteering at her children’s elementary and middle schools in the Madison School District.