O’Melveny Worldwide

Allessandra Rose Johnson is a litigator in O’Melveny’s New York office, where she focuses on trial work and internal investigations for clients in a variety of industries, including entertainment, insurance, energy, and technology. Allessandra’s trial experience includes representing a large insurance company in coverage disputes in New York federal and state court. She also has represented a technology company in an ICC arbitration and a large energy company in an FCPA investigation and conducted internal investigations for clients in the investment-management and life-sciences spaces.

Allessandra devotes significant time to her pro bono practice. She has appeared in Queens Family Court and Immigration Court to successfully secure Special Immigrant Juvenile Status and participate in asylum proceedings for a young woman from Honduras who entered the United States as an unaccompanied minor. She also has represented a man unconstitutionally convicted of murder in Louisiana, winning a not-guilty verdict on a retrial.

Allessandra is an Adjunct Professor of Trial Advocacy at Fordham University School of Law, where she teaches trial skills, evidence, and civil and criminal procedure.

In her practice, Allessandra draws on her experience as a clerk for then-Chief Judge Leonard P. Stark at the US District Court for the District of Delaware. Prior to her career in the law, Allessandra was a professional musician, having studied classical piano performance for decades.

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Bar Admissions

  • New York


  • Fordham University School of Law, J.D.; cum laude; Ruth Whitehead Whaley Scholar; Articles & Notes Editor, Fordham Law Review; Interschool Competitions Editor, Brendan Moore Trial Advocacy Center; Dispute Resolution Society
  • Manhattan School of Music, B.M., Classical Piano Performance

Professional Activities


  • The Honorable Sue L. Robinson, United States District Court for the District of Delaware


  • The Honorable Leonard P. Stark, United States District Court for the District of Delaware


  • “Oh, Won’t You Stay With Me?: Determining Whether § 3 of the FAA Requires a Stay in Light of Katz v. Cellco Partnership,” 84 Fordham L. Rev. 2261 (2016)


  • Fordham Law Alumni Association Recent Graduates Committee
  • Irish American Bar Association of New York