Atty. W. A. Derry "Derry" Millar

Atty. W. A. Derry "Derry" Millar

Derry Millar is a skilled and dedicated advocate with a broad civil litigation and administrative law practice who brings his skills in dispute resolution and as an advocate to his work as an arbitrator and mediator. Derry was elected as the Treasurer (President) of the Law Society of Upper Canada (governing body for Ontario lawyers and paralegals) on June 26, 2008 and May 29, 2009, and served as Treasurer from June 26, 2008 to June 29, 2010.

52 yrs experience 52 year
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Profile Summary

About W. A. Derry "Derry" Millar at a glance

W. A. Derry "Derry" Millar is a business, litigation, government, and adr attorney, practicing at WeirFoulds LLP. They have 52+ years of legal experience, licensed to practice since 1974. Admitted to practice in Ontario (1974). Recognitions include Best Lawyers in America — Administrative and Public Law (2026), Best Lawyers in America — Alternative Dispute Resolution (2026), and Best Lawyers in America — Corporate and Commercial Litigation (2026).

Verified attorney profile · Updated June 2026

About

  • Derry Millar is a skilled and dedicated advocate with a broad civil litigation and administrative law practice who brings his skills in dispute resolution and as an advocate to his work as an arbitrator and mediator
  • Derry was elected as the Treasurer (President) of the Law Society of Upper Canada (governing body for Ontario lawyers and paralegals) on June 26, 2008 and May 29, 2009, and served as Treasurer from June 26, 2008 to June 29, 2010
  • Derry is the fourth partner in the history of the firm to have this honour bestowed on him
  • In more than 41 years of practice, and as partner with the firm from 1978 to 2015, Derry has developed a well-earned reputation as a senior counsel in a wide variety of areas of the law
  • Derry's practice includes Aviation, Commercial, Estates, Environmental, Insurance, Products Liability, Intellectual Property and Real Estate
  • Derry has dealt with complex commercial, environmental, aviation, products liability and estate cases
  • Derry has acted in class actions for both plaintiffs and defendants and has acted in a variety of class actions as counsel to class counsel on issues arising in the proceedings, including fee approval motions
  • Derry's skill as an advocate was recognized when he was elected in 2001 as a Fellow of the American College of Trial Lawyers
  • Derry is also a Fellow of the Chartered Institute of Arbitrators
  • Derry has appeared in all levels of courts in Ontario, the Supreme Court of Canada, the Federal Court of Canada and the Supreme Court of British Columbia
  • He has appeared before various administrative tribunals, including the Environmental Appeal Board, Ontario Municipal Board, Workers Compensation Appeal Tribunal, Anti-Dumping Tribunal, Ontario Energy Board, and Criminal Injuries Compensation Board
  • He has also appeared before Municipal Councils and Boards
  • Derry has acted as an arbitrator on commercial, oppression, partnership, intellectual property, telecommunications, construction and real estate cases, as mediator on commercial, oppression, estates, environmental and insurance cases, and as a decision-maker on police discipline and professional discipline cases
  • He has acted as an arbitrator for domain name disputes under the Canadian Internet Registration Authority domain name disputes
  • Derry is on the arbitration and mediation panels for ADR Chambers, and the arbitration panel of the British Columbia International Commercial Arbitration Centre
  • Derry acted as Chair of Boards of Inquiry established under the Metropolitan Toronto Police Force Complaints Act, 1984 and the Police Services Actfrom 1985 to July 1996 to hear complaints against police officers
  • As a bencher of the Law Society of Upper Canada, Derry has been a chair and member of the hearing and appeal panels on many cases involving complaints against lawyers
  • Derry clerked with Mr. Justice Ritchie of The Supreme Court of Canada, 1971-1972

Practice Areas Explained

W. A. Derry "Derry" Millar's Areas of Practice

Each practice area below reflects the types of cases W. A. Derry "Derry" Millar handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

W. A. Derry "Derry" Millar is one of 501,317 business attorneys indexed nationally. Browse business attorneys →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

W. A. Derry "Derry" Millar is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys →

Government & Administrative Law

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

W. A. Derry "Derry" Millar is one of 132,225 government attorneys indexed nationally. Browse government attorneys →

Mediation & Arbitration

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

W. A. Derry "Derry" Millar is one of 73,906 adr attorneys indexed nationally. Browse adr attorneys →

Frequently Asked

Common questions about W. A. Derry "Derry" Millar

What practice areas does W. A. Derry "Derry" Millar handle?
W. A. Derry "Derry" Millar focuses on business, litigation, government, adr. Each practice area listed reflects experience handling cases of that type in their licensed jurisdictions.
How long has W. A. Derry "Derry" Millar practiced law?
W. A. Derry "Derry" Millar has 52+ years of legal experience and has been licensed since 1974.
How can I contact W. A. Derry "Derry" Millar for a consultation?
You can contact W. A. Derry "Derry" Millar directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has W. A. Derry "Derry" Millar received?
W. A. Derry "Derry" Millar's notable recognition includes: Best Lawyers in America — Administrative and Public Law; Best Lawyers in America — Alternative Dispute Resolution; Best Lawyers in America — Corporate and Commercial Litigation; Best Lawyers in America — Awards:; Best Lawyers in America — Law Society Medal, 2014.

Awards

Best Lawyers in America — Administrative and Public Law
- 2026
Best Lawyers in America — Alternative Dispute Resolution
- 2026
Best Lawyers in America — Corporate and Commercial Litigation
- 2026
Best Lawyers in America — Awards:
- 2026
Best Lawyers in America — Law Society Medal, 2014
- 2026

Bar Admissions

Ontario
Admitted: 1974

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