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Contact by email at [email protected]

t. +1 416-601-8141


In a rapidly evolving business environment, Will provides practical, industry-focused advice tailored to the unique goals of his clients.

Will Horne is an associate in our Business Law Group in Toronto. He maintains an industry-focused practice with particular emphasis on transactional, environmental, and regulatory services in the energy and power industry. Will has experience advising on a broad range of corporate and commercial transactions including mergers & acquisitions, project finance, capital markets and securities law, as well as government matters.

Recognizing the increasing business risks and opportunities arising from Environmental, Social, and Governance (“ESG”) factors, Will is a dedicated member of the Firm’s ESG Strategic Issues Group. In this role, he works to harmonize and integrate expertise from across the Firm to serve specific client needs. Will is focused on helping clients succeed in the context of changing economic and social circumstances, with particular emphasis on climate-related governance matters, corporate disclosures, and staying ahead of regulatory trends.

As a contributor to McCarthy Tétrault's Inclusion Now initiative, Will is committed to advancing diversity and inclusion at the Firm and beyond. In particular, Will is focused on building partnerships with the LGBTQ2S community, and advocating for the benefits of diverse workplaces.

Prior to joining McCarthy Tétrault, Will served as a Policy and Parliamentary Affairs Advisor to the Minister of Justice and Attorney General of Canada. In that role, Will advised federal Cabinet Ministers on numerous key files, including criminal justice system reform, legalization and regulation of cannabis, high profile extradition matters, and communications strategies related to major policy decisions.

Will graduated from the Schulich School of Law at Dalhousie University in 2014, having completed a certificate in environmental law and a semester working at the Dalhousie Legal Aid Clinic.

In his spare time, Will stays involved with industry associations in the energy and power space, as well as environmental organizations. He is currently part of two working groups committed to the development and deployment of energy storage technologies. Will has also served on the boards of the Winter River Watershed Association and the Island Nature Trust.

Will was called to the PEI bar in 2015 and the Ontario bar in 2018.