Éric St-Pierre

Éric St-Pierre is a Canadian politician, lawyer, climate advocate, and philanthropist who has served as the member of Parliament for the riding of Honoré-Mercier since 2025 as a member of the Liberal Party of Canada.

Before entering politics, St-Pierre worked as a lawyer specializing in Indigenous and environmental law and served as executive director of the Trottier Family Foundation, where his work focused on climate-related projects.

Early life and education St-Pierre holds a dual law degree in civil law and common law from McGill University, and a political science degree from Concordia University. He was called to the Quebec Bar in 2012.

Before his work in philanthropy, St-Pierre practiced Indigenous and environmental law for five years as a litigator and mediator. He also worked in the Solomon Islands as part of a federal internship program.

Career From 2016 to 2025, St-Pierre served as the executive director of the Trottier Family Foundation, a non-profit organization based in Montreal, Canada, that manages and funds climate change-related projects. During his tenure, the foundation shifted its assets towards sustainable investing, expanded its grants to registered charities, and supported initiatives to advance the transition to a low-carbon economy. He worked with the City of Montreal and Mayor Valérie Plante on developing Montreal's carbon-neutral climate action plan, which included a commitment to reduce carbon emissions by 55 percent. The Trottier Family Foundation also supported this initiative by contributing to the creation of the Montreal Climate Partnership, which engaged civil society in the new climate plan.

St-Pierre is a co-founder of Low Carbon Cities Canada (LC3) and the Greater Montréal Climate Fund, and previously he held positions on the Board of Environment Funders Canada and as co-chair of the Montreal Climate Partnership. In March 2022, he organized the Great Canadian ESG Championship, a competition funded by Canadian charitable foundations to promote sustainable investing. He attended and spoke at COP26 and COP28.

In 2024, St-Pierre helped mobilize $405 million for Canadian climate philanthropy.

In 2025, St-Pierre was nominated as the Liberal Party of Canada candidate for the riding of Honoré-Mercier in the 2025 Canadian federal election.

Political career

In May 2025, he was sworn in as a member of Parliament in the 45th Parliament and joined the House of Commons Standing Committee on Environment and Sustainable Development.

Riding (Honore-Mercier)

St-Pierre sponsored Petition E-6953 from a constituent asking for enhanced support for public transportation options in Rivieres-des-Prairies.

Climate and politics

St-Pierre helped form an environmental caucus within the liberal party to discuss climate issues.

He spoke in the House on October 1, 2025, for National Energy Efficiency Day and also introduced Motion M-19 National Energy Efficiency Day - that the government should designate the first Wednesday in October, every year, as National Energy Efficiency Day, to recognize the important contributions that the energy efficiency sector makes in saving money, cutting pollution and creating jobs. His efforts to mark October 1 as National Energy Efficiency Day was endorsed by others. He explained his reasoning for the importance of energy efficiency.

Committee work

He was active on the ENVI Committee - Standing Committee on Environment and Sustainable Development. He drove the committee to publish a report on the Impacts of Canada's Financial System related to the Environment and Climate Change. He also pushed for a study on the industrial carbon pricing system.

He also sits on the Standing Committee on Natural Resources.

Liberal Party of Canada

He introduced a caucus motion on 'Energy Efficiency as a Nation Building Project' which made it to the top 24 of 400 motions and it was successfully adopted at the Liberal Party of Canada National Convention in April 2026.

Sports and politics

In 2025, St-Pierre participated in a half-marathon with other MPs to honour Canada Day.

He mobilized MPs for the push-up challenge in support of the Canadian Mental Health Association – a 2,000-push-up challenge to support physical and mental health.

In May 2026, to celebrate his first year sworn in as an MP, St-Pierre ran the Ottawa half-marathon in just over two hours, dressed up as the Peace Tower.

Personal life St-Pierre resides in Montreal with his wife, Sylvie Trottier, and their two children. He is a long-distance runner and has completed several ultramarathons.

In 2021, he was awarded the Canadian Climate Champion Award.

In 2022, he was recognized as a Clean50 honoree.

In 2022, he received the Lawyer of the Year award from the Jeune Barreau de Montréal in the alternative career category.

In 2025, he received the King Charles III Coronation Medal.

Electoral record