Cassels Brock & Blackwell LLP (also known as Cassels) is a prominent Canadian law firm with a rich history spanning over 135 years, founded in 1888. The firm is recognized for its comprehensive legal services, focusing on transactions, advocacy, and advisory work across Canada's most dynamic business sectors. Cassels serves a diverse client base, ranging from startups and emerging companies to multinational corporations and public institutions. Key areas of expertise include mining and natural resources, financial services, technology, real estate, infrastructure, and litigation. Committed to client success, innovation, and a collaborative culture, Cassels provides strategic legal solutions from its offices in Toronto, Calgary, Vancouver, and Montréal.
Serves as the firm's largest office and primary hub for its extensive legal services, national firm administration, client relations, and strategic decision-making. It houses a significant number of lawyers and staff across all major practice areas.
Located in Scotia Plaza, a landmark skyscraper complex in Toronto's Financial District, offering modern, Class AAA office facilities, advanced technology infrastructure, and direct access to the PATH underground walkway network.
Characterized by a professional, collaborative, and client-focused environment. The firm emphasizes excellence, innovation, mentorship, and diversity and inclusion, fostering a supportive atmosphere that encourages professional growth and development.
Its location in Canada's largest city and primary financial centre provides unparalleled access to major clients, capital markets, courts, and regulatory bodies. This strategic positioning underscores the firm's national prominence and its capability to service complex domestic and international mandates.
While Cassels' physical offices are strategically located in Canada's major business centres (Toronto, Calgary, Vancouver, Montréal), the firm maintains a significant global reach. It routinely advises international clients on their Canadian business interests and investments, and assists Canadian clients with their international activities and expansion. This global service capability is supported by dedicated international desks (including those focused on the US, China, India, Israel, Latin America, Korea, and Japan) and strong, long-standing relationships with leading law firms in jurisdictions around the world, ensuring clients receive seamless and expert cross-border legal support. Cassels lawyers are highly experienced in navigating and managing complex multijurisdictional transactions, disputes, and regulatory matters.
Scotia Plaza, Suite 2100, 40 King Street West
Toronto
ON
Canada
Address: Bankers Court, West Tower, Suite 3200, 850 – 2nd Street SW, Calgary, AB T2P 0R8
Serves as a critical hub for clients in Alberta's dynamic economy, supporting local, national, and international businesses operating in or investing in the region. This office connects clients to the firm's full national platform and expertise.
Address: Four Bentall Centre, Suite 2200 – 1055 Dunsmuir Street, P.O. Box 49272, Vancouver, BC V7X 1L2
Supports clients in Canada's Pacific gateway, leveraging deep expertise in sectors crucial to British Columbia's growth. The office plays a key role in facilitating cross-border transactions and international business, particularly with Asian markets.
Address: Place Ville Marie, Bureau 930, Montréal, QC H3B 2C4
Strategically expands the firm's national footprint into the Quebec market, serving local businesses as well as national and international clients with interests in the province's unique civil law jurisdiction and vibrant industries.
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As of April 2025, Cassels Brock & Blackwell LLP' leadership includes:
Cassels Brock & Blackwell LLP has been backed by several prominent investors over the years, including:
In the past 12 months, Cassels Brock & Blackwell LLP has notably strengthened its C-suite with strategic appointments in critical operational areas such as information technology and people & culture. These hires reflect the firm's ongoing commitment to operational excellence, technological advancement, and fostering a strong firm culture. No major departures from the firm's top executive leadership (e.g., Firm Managing Partner, C-Suite) have been publicly announced during this period.
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Cassels Brock & Blackwell LLP primarily uses a standard email format for its employees, which is typically the first initial of the first name followed by the full last name, at the firm's domain.
flastname@cassels.com
Format
ktaylor@cassels.com
Example
92%
Success rate
Cassels News • March 20, 2024
Cassels announced the strategic appointment of Thomas P. Donovan as its new Chief Information Officer. Donovan will lead the firm's comprehensive technology strategy, drive innovation programs, and oversee its information systems to enhance legal service delivery and operational efficiency nationwide....more
Cassels News / Chambers and Partners • February 15, 2024
Cassels Brock & Blackwell LLP has once again been distinguished as a leading law firm in the prestigious Chambers Global 2024 guide. Numerous practice areas and individual lawyers from the firm received top-tier rankings, underscoring their expertise in key global and Canadian sectors such as Mining (Global-wide and Canada), Energy & Natural Resources, and Aboriginal Law....more
Cassels News • January 8, 2024
Cassels announced the appointment of Anina Valimohamed as its new Chief People & Culture Officer. In this key leadership role, she will be responsible for all aspects of human resources strategy, including talent acquisition and management, employee engagement, diversity, equity, and inclusion initiatives, and fostering a positive and high-performing firm culture....more
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