Leanne M. O’Leary, KC

Leanne M. O’Leary, KC
Managing Partner
Legal Assistant

Cox & Palmer are proud to share that Leanne M. O’Leary, KC, Managing Partner for Cox & Palmer St. John’s, has been appointed a Judge of the Supreme Court of Newfoundland and Labrador, General Division.

Leanne earned a Bachelor of Commerce (Honours) Co-Operative from Memorial University of Newfoundland and Labrador in 1992 and a Bachelor of Laws from Queen’s University in 1995. She was admitted to the Newfoundland and Labrador Bar in 1996.

Leanne has worked exclusively with Cox & Palmer for her entire career, with her practice focused on civil and commercial litigation, and personal injury and insurance law. Leanne has been consistently recognized by Best Lawyers in Canada and Canadian Legal Lexpert Directory as a leading practitioner in these areas. She has been a partner with Cox & Palmer since 2001, serving as Managing Partner since 2017. She was appointed Kings Counsel in 2023.

Leanne has always been a fearless leader, mentor, and friend to her colleagues. Her dedication to her practice and her clients has been essential to the success of Cox & Palmer.

We are honoured to have her serve the Province of Newfoundland and Labrador as Justice O’Leary, and we are incredibly proud to congratulate her on this amazing achievement.

Read the media release from the Government of Canada.


King's Counsel

  • 2023

Bar Admission

  • Newfoundland and Labrador (1996)

Law School

  • Queen's University


  • Memorial University of Newfoundland (B. Comm. Hons. Co-op 1992)
  • Queen’s University (LL.B. 1995)

Professional Activities & Affiliations

  • Member: Advocates’ Society
  • Member: Canadian Defence Lawyers
  • Canadian Bar Association
  • Former Elected Bencher, Law Society of Newfoundland and Labrador
  • Instructor, Law Society of Newfoundland and Labrador Bar Admission Course: Civil Procedure
  • Steering Committee Member: Supreme Court of Newfoundland and Labrador (General Division): Rules of Court Revision Program
  • Steering Committee Member: Newfoundland and Labrador Court of Appeal: Rules of Court Revision Program
  • Law Society Representative: Rules Committee of Supreme Court of Newfoundland and Labrador (General Division) and Newfoundland & Labrador Court of Appeal

Lectures & Presentations

  • Presenter, Various Local and Regional Firm-sponsored Insurance Law Seminars, 2001-2013
  • Presenter, Chartered Insurance Professionals Society Seminar; Newfoundland Chapter: E & O Liability Insurance: Duty to Defend and Indemnify, November 1999

Law Society Memberships

  • Law Society of Newfoundland & Labrador


  • English