About lerners
Founded 1929 by Mayer Lerner
About lerners
Founded 1929 by Mayer Lerner
About lerners
Founded 1929 by Mayer Lerner
We Listen
Legal expertise does not build trust; listening does.
At Lerners, every case turns on what we learn from listening to the client’s story, allowing us to understand their goals and put our legal skills to work to shape an outcome that truly serves their best interests.
What to Expect When You Choose Lerners
You will feel heard. We listen until you are sure we have heard you.
You will understand your choices. We explain your options until you fully understand them.
You will know we have your best interest in mind. We deliver on our promises.
You will trust us to work as efficiently as possible. We do not waste your time or your money.
Transparency, tenacity, and tailored strategy — this is the Lerners promise.
Trusted Legal Advice
When you retain legal counsel, you should have full confidence in their expertise, integrity, and responsiveness. With a reputation for delivering the best in client service, Lerners is regularly consulted by other lawyers, businesses, and individuals from across the country and internationally.
Many of our lawyers are recognized for legal expertise by Chambers Partners, Lexpert and Best Lawyers in Canada. They have appeared as lead counsel before the Ontario Court of Appeal and the Supreme Court of Canada. We are proud of our record of success in winning favourable outcomes for clients at trial and in appeals.
You can trust us with your case.
Four Distinct Offices… One Impressive Firm
With more than 140 experienced lawyers and 300+ professional support staff across four locations, we offer the expertise, resources, and specialized insight to deliver responsive and personalized service.
LONDON
Full-service legal excellence, the largest office of its kind between Toronto and Calgary.
TORONTO
One of the city’s largest litigation boutiques, renowned for our strength at trial and on appeals.
WATERLOO REGION
Supporting startups and the technology sector.
STRATHROY
Legal expertise for Southwestern Ontario’s farming community.
FOCUSED ON VALUE, EVERY STEP OF THE WAY
We are committed to delivering value in every matter. Whether negotiating a settlement or advocating at the highest levels of court, we approach each case with clear direction and purpose. By aligning the right expertise to the critical legal issues at every stage, we ensure resources are used efficiently and effectively—protecting both your time and your investment.
USE OUR EXPERIENCE TO YOUR ADVANTAGE.
Clients rely on our full-service expertise across a wide range of practice areas and extensive courtroom experience. You can trust our legal know-how, integrity, and commitment to excellence in our work for you.
our story
In 1929, Mayer Lerner first opened the doors to his law firm and was joined by his brother Sam a decade later. Together they built what has become one of Ontario’s most trusted and respected law firms. Over the decades, Lerners lawyers have shared their founder’s guiding principle: “No matter who our clients are, each and every one deserves the best representation possible.”
Supporting the Communities that Support Us
At Lerners, we believe that strong communities are built on shared support. That’s why we proudly give back to the communities where we live and work, supporting more than 40 charities, foundations, non-profits, and local organizations across the province.
Our lawyers are deeply involved in the community — not only as legal professionals, but as dedicated volunteers, board members, and advocates for causes that matter. We’re proud to lend our time, skills, and resources to help support local organizations making a difference.