Academy Member Inducted 2020

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Mark L. Tweedy, C. Med., C. Arb., Arbitrator & Mediator, Vancouver, British Columbia.

Mark L. Tweedy, C. Med., C. Arb.

Mark Tweedy Mediation+Arbitration Ltd.

Vancouver, BC  
Tel: (604) 341-8980
Fax: N/A
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Recognized to British Columbia Chapter for:
Civil/Commercial Mediation & Arbitration

Regularly travels out of province to: Alberta

Other ADR Services: ADR Training Services, Insurance Umpire, Med-Arb

Video Conferencing
  • Practice Commenced2004
  • # of MEDS (as of 24/6/24)2000
  • # of ARBS (as of 24/6/24)40
Current Practice
Online / In-Person


Mark commenced practice as a mediator in 2004, and has practiced exclusively as a mediator, arbitrator and adjudicator since 2014. Mark was called to the BC Bar in 1982, and practiced as trial counsel for over 30 years. He is currently a non-practicing member of the Law Society of British Columbia.

Mark has conducted approximately two thousand in a wide variety of areas, including family businesses, personal injury, professional liability, construction, insurance (property, casualty, life, and disability), shareholders’ and joint venture partners’ disputes, closely held corporations, real estate, aviation, employment, and wills and estates. Mark has particular expertise mediating disputes where there is high emotional content.

Mark also frequently acts as an arbitrator. His arbitration experience includes construction claims, commercial disputes, insurance matters, and UMP and personal injury claims.. Mark also has substantial experience sitting as a court appointed adjudicator in class action cases.

Mark received his Chartered Mediator designation in 2017, and the Chartered Arbitrator designation in 2020.

Case Experience

  • Accounting
  • Agricultural
  • Architecture
  • Arts & Fashion Sector
  • Aviation
  • Banking & Finance
  • Business Dissolution
  • Class Actions
  • Commercial/Business
  • Community Associations
  • Condominiums/Strata
  • Construction
  • Contract Disputes
  • Debtor/Creditor
  • Disability Claims
  • Employment
  • Engineering
  • Environmental
  • Estates & Trusts
  • Family Businesses
  • Forestry
  • Franchise
  • Government/Municipalities
  • Health Care
  • Industrial
  • Insurance
  • Landlord/Tenant
  • Legal Malpractice
  • Libel & Slander
  • Medical Malpractice
  • Mining
  • Natural Disasters
  • Non-Profit Organizations
  • Partnerships
  • Pensions / ERISA
  • Personal Injury
  • Pharmaceuticals
  • Police
  • Premises Liability
  • Product Liability
  • Professional Fees
  • Professional Liability
  • Professional Malpractice
  • Professional Negligence
  • Property Damage
  • Railroad & Trucking
  • Real Estate
  • Sexual Harassment
  • Shareholder Disputes
  • Sports
  • Torts
  • Transportation
  • Workers' Compensation
  • Wrongful Death
  • Wrongful Dismissal


  • Justice Institute of British Columbia, various courses in Conflict Resolution and Mediation, 2004 and 2007
  • University of British Columbia, LL. B., 1981
  • University of British Columbia, B.A. (Hons.), 1978
  • United World College of the Atlantic, South Wales, UK, International Baccalaureate 1975

Memberships & Affiliations

  • Law Society of British Columbia, 1982 to date, currently non-practicing
  • Mediate BC, Civil Roster Member, 2004 to date
  • Vancouver International Arbitration Centre, Mediation and UMP Panel Member, 2013 to date, and Arbitration and UMP Panel Member, 2013 to date
  • BC Arbitration and Mediation Institute, Mediation Panel Member, 2016 to date
  • ADR BC and ADR Canada, Member, 2013 to date, received the Chartered Mediator designation in 2017, and the Chartered Arbitrator designation in 2020
  • International Academy of Mediators, Distinguished Fellow, 2020

Language Skills


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