Gail Y. Cosgrove
Gail Y. Cosgrove
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Gail represents many of Hawaii’s major private and public hospitals and medical centers, physicians and other healthcare providers in medical malpractice cases before the Medical Inquiry Conciliation Panel (MICP) and in state and federal courts.

Gail was recognized by Best Lawyers as “Lawyer of the Year” in 2023 for Medical Malpractice Law – Defendants in Honolulu, Hawaii. In January 2024, Gail was lead counsel and obtained a defense verdict for a medical center in a case involving sudden cardiac death of a patient following the patient’s discharge from the medical center. Gail is also an appointed member of the Judicial Arbitration Program which oversees the Court Annexed Arbitration Program.

She practices primarily in civil litigation, medical liability, complex litigation, product liability, and toxic tort litigation.

Gail has represented a domestic building products manufacturer in a multimillion-dollar property damage litigation brought by the State of Hawai‘i and an international architectural firm in a lawsuit for damage sustained to a resort hotel by Hurricane Iniki.


As an active member in the legal community, Gail has served as Hawai‘i Women’s Legal Foundation’s president and is currently a director of the organization. She is also part of the clinical teaching faculty at the William S. Richardson School of Law.

In the Fall, “Gridiron Gail” emerges and cheers on her favorites – the University of Hawai‘i Rainbow Warriors and Kansas City Chiefs – through rain, sleet, snow, and vog, she is a loyal fan. Gail is also an avid baker and has watched every episode of the Great British Baking Show multiple times! Knitting and crocheting are also favored pastimes with an overly abundant stash of yarn and fiber. Gail is inspired daily by her Chocolate Labrador Belle, to be more doglike – energetic, selfless, resilient, forgiving, loyal and loving.


  • University of Hawaii, William S. Richardson School of Law, Honolulu, Hawaii
    • J.D. - 1981
  • University of Hawaii, Manoa
    • B.A. - 1978
    • Honors: With Distinction

Bar Admissions

  • United States Supreme Court
  • U.S. District Court District of Hawaii
  • U.S. Court of Appeals 9th Circuit
  • Hawaii, 1981

Professional Associations

  • Defense Research Institute
  • Hawai‘i Defense Lawyers
  • Hawaii Federal Bar Association
  • Hawai‘i Justice Foundation
  • Hawai‘i State Bar Association
  • Hawai‘i Women Lawyers
  • Hawai‘i Women’s Legal Foundation


  • The Best Lawyers in America
  • Super Lawyers
  • Benchmark Litigation

Practice Areas:

  • Class Actions
  • Drug And Medical Device Litigation and Medical Malpractice
  • Insurance Litigation And Coverage
  • Professional Liability


  • The Best Lawyers in America
  • Super Lawyers
  • Benchmark Litigation
Best Lawyers | Lawyer | Of The Year | Gail Y. Cosgrove | Medical Malpractice Law | Defendants | Honolulu | 2023
Best Lawyers | Lawyer | Of The Year | Gail Y. Cosgrove | Product Liability Litigation | Defendants | Honolulu | 2023
Gail Cosgrove | 2024 | Recognized By | Best Lawyers