Heather L. Treacy, K.C. is a highly sought after and nationally recognized counsel whose practice is focused on civil litigation and dispute resolution.
Heather is the former Managing Partner of the Calgary office of DLA Piper (2013-2019) and a former elected member of DLA Piper’s Executive Committee. She has over 30 years of experience in acting as counsel to clients in complex multi-party litigation and disputes, and has extensive experience with negotiations and mediation on matters related to tort law, class actions, energy and resources law, indigenous and constitutional law, general commercial disputes, transportation, aviation, products liability, human rights, employment law, health law and intellectual property law. She frequently appears before both the Trial and Appellate Courts in the Province of Alberta, the Federal Court of Canada, the Federal Court of Appeal and various tribunals, including the Canadian Human Rights Tribunal, energy related tribunals and the Canadian Transportation Agency. In addition to the above, Heather provides legal and governance advice to both public and private sector boards. Heather also chairs the pro bono committee of DLA Piper.
Heather also has specific expertise in indigenous law and provides advice on a significant number of issues involving treaty, indigenous rights and indigenous title issues and has been involved in several precedent setting cases, including those in the energy sector.
Heather has been recognized for her expertise in the area of dispute resolution by leading lawyer ranking guides Benchmark Canada (Litigation Star), Acritas (Star Lawyer), Chambers Canada, Legal 500 Canada and Euromoney. In the area of indigenous law, she has been recognized by The Canadian Legal Lexpert Directory, Best Lawyers in Canada, Chambers Global and Chambers Canada. In 2014, Heather was named one of WXN’s Top 100, Canada’s Most Powerful Women, in 2016, she was a Women in Law Leadership (WILL) Award winner in the “Leadership in the Profession in Private Practice” category, and in 2017 she was named a winner of the Lexpert Zenith Awards: Celebrating Women in Law. Most recently, Heather was an Excellence Award Recipient in the Woman of the Year category for the 2020 Canadian Law Awards.
Heather is active in the community and has a passion for the arts. She is the former Chair of the Board of Directors of the Calgary Philharmonic Orchestra. She is a former member of the Board of Directors of the University of Calgary Alumni Association. She a former member of the Board of Directors of the Calgary International Language Foundation and currently a member of the Board of Directors of the Calgary French and International School Society.
