What kind of clients does Cassels represent?

Cassels describes its client base as ranging from start-ups to multinational organizations, across the transaction, advocacy, and advisory needs of Canadian business sectors.

Does Cassels handle mergers and acquisitions and capital markets work?

Yes. Mergers & Acquisitions and Capital Markets are both listed among the firm's more than 40 practice and industry groups.

Where are Cassels' offices located?

The firm is based in Toronto, with Canadian offices in Vancouver and Calgary and a U.S. office in Miami, Florida.

Does Cassels have an Aboriginal law practice?

Yes. Aboriginal law, including Aboriginal Law Litigation & Dispute Advisory, is one of the firm's listed practice areas.

Does the firm handle restructuring and insolvency matters?

Yes, Restructuring & Insolvency is one of Cassels' practice groups, alongside related areas like Securities Litigation and Class Actions.

How long has Cassels been practising law in Toronto?

The firm traces its history to 1888 and says it has more than 130 years of experience in Canadian business law. It moved into its current Toronto office at the Bay Adelaide Centre in 2023.

Cassels Brock & Blackwell LLP | LawOnline Directory

About Cassels Brock & Blackwell LLP

Cassels Brock & Blackwell LLP is a national business law firm based in Toronto, with additional Canadian offices in Vancouver and Calgary and a U.S. office in Miami. The firm traces its roots to 1888 and points to more than 130 years of experience in Canadian business law. It's built around the transaction, advocacy, and advisory needs of the country's business sectors, and its clients range from start-ups to multinational organizations.

The firm organizes its work into more than 40 practice and industry groups, spanning mergers and acquisitions, capital markets, restructuring and insolvency, mining, entertainment and sports, cannabis, and Aboriginal law, among others. That range lets a single client move between a financing, a piece of litigation, and a regulatory filing without switching firms.

Practice areas

Business & Corporate Law

Employment & Labour Law

Bankruptcy & Insolvency

Real Estate Law

Civil Litigation & Dispute Resolution

Indigenous Law

Class Actions

Tax Law

Intellectual Property

Construction Law

Milestones & recognition

The firm traces its history back to 1888 and describes itself as having more than 130 years of experience in Canadian business law.
In 2016, the firm's Inclusion & Diversity Committee won a Lexpert Zenith Award.
Cassels was recognized at Pro Bono Ontario's 2016 Awards Gala for its service to self-represented litigants.
The firm holds Mansfield Certification Plus and is a signatory to the Law Firm Diversity and Inclusion Network's Statement of Principles.
In 2023, the firm moved its Toronto office into the Bay Adelaide Centre's North Tower after 35 years at Scotiabank Plaza.

In the community

Staff sit on boards, coach sports teams, mentor youth, and volunteer with charitable organizations.
The firm supports organizations including the Daily Bread Food Bank, the Canadian Red Cross, SickKids Foundation, Mount Sinai Foundation, the Barbra Schlifer Commemorative Clinic, and United Way.
Its pro bono partners include Law Help Ontario, Boys & Girls Clubs of Canada, and Special Olympics Canada.
Cassels launched a Black-Owned Small Business Grant program to support Canadian entrepreneurs.

Good to know

Wheelchair accessible

Lawyers 252

This firm’s lawyers at a glance

Called to the bar: 1969–2026 · median 11 years in practice 248 of 252 lawyers
Law schools: Osgoode (47), Western University (27), University of Windsor (16), Osgoode Hall Law School (15), University of Toronto (15), Queen’s University (13) and 34 more 211 of 252 lawyers
Languages on the roster: English, French, Italian, Lithuanian

Who handles what

Offices 3

Toronto416-869-5300

Suite 3200, Bay Adelaide Centre - North Tower, 40 Temperance Street, Toronto, ON M5H 0B4

Vancouver604-691-6100

Suite 3100, Park Place, 666 Burrard Street, Vancouver, BC V6C 2X8

Calgary403-351-2920

Suite 3700, Bankers Hall West, 888 3rd Street SW, Calgary, AB T2P 5C5

The neighbourhood

Cassels' Toronto office sits in the Bay Adelaide Centre's North Tower, on Temperance Street in the city's Financial District. The firm moved there in 2023, taking the building's upper five floors after 35 years at Scotiabank Plaza on King Street West. The North Tower opened in 2022 and also houses Scotiabank's global head office, and like the rest of the Bay Adelaide complex it connects to Toronto's underground PATH network.

The new office was designed around what the firm calls equality of access to daylight: private offices moved from the windows to the interior of each floor, so meeting rooms and common spaces get the view instead. The space also includes a wellness centre with exercise equipment for staff.

Frequently asked questions

What kind of clients does Cassels represent?: Cassels describes its client base as ranging from start-ups to multinational organizations, across the transaction, advocacy, and advisory needs of Canadian business sectors.
Does Cassels handle mergers and acquisitions and capital markets work?: Yes. Mergers & Acquisitions and Capital Markets are both listed among the firm's more than 40 practice and industry groups.
Where are Cassels' offices located?: The firm is based in Toronto, with Canadian offices in Vancouver and Calgary and a U.S. office in Miami, Florida.
Does Cassels have an Aboriginal law practice?: Yes. Aboriginal law, including Aboriginal Law Litigation & Dispute Advisory, is one of the firm's listed practice areas.
Does the firm handle restructuring and insolvency matters?: Yes, Restructuring & Insolvency is one of Cassels' practice groups, alongside related areas like Securities Litigation and Class Actions.
How long has Cassels been practising law in Toronto?: The firm traces its history to 1888 and says it has more than 130 years of experience in Canadian business law. It moved into its current Toronto office at the Bay Adelaide Centre in 2023.

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Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗