Leo Adler Law
3 lawyers · City of Toronto
One of 229 law firms listed in North York, and one of 58 handling Criminal Defence.
About Leo Adler Law
Leo Adler Law is a small criminal, quasi-criminal, and regulatory defence firm based in Toronto, with its office on Yonge Street in North York. Leo Adler, the firm's founder, was called to the Ontario bar in 1975 after earning a B.A. from McGill University in 1970 and a J.D. from Osgoode Hall Law School in 1973. The firm handles Canadian criminal charges ranging from impaired driving and drug or gun offences to sexual assault, domestic assault, and murder or manslaughter, along with a practice built around international and regulatory matters: extradition, transfer of Canadians serving sentences abroad, international drug and gun cases, corporate crime, and professional misconduct hearings for licensed professionals. It does not handle extraditions between U.S. states.
Adler is an adjunct professor at Osgoode Hall Law School, teaching International Criminal Law, and received the school's 2016 Adjunct Faculty Distinguished Service Award. Adler was a founding member of the International Criminal Bar and served on the federal Cross-Cultural Roundtable on Security from 2005 to 2015. Kevin Gray, who holds a law degree from Osgoode and an LLM from Columbia Law School along with a PhD from Laval University, works alongside Adler as academic counsel focused on extradition and transnational criminal law. Christine J. Rose, a licensed paralegal who moved into an associate role at the firm, has a stated interest in cases involving clients with Autism Spectrum Disorder.
Practice areas
Milestones & recognition
- Leo Adler was called to the Ontario bar in 1975 and has conducted trials and appeals across Canada since, including cases before the Supreme Court of Canada.
- Adler is an adjunct professor of International Criminal Law at Osgoode Hall Law School and received the school's 2016 Adjunct Faculty Distinguished Service Award.
- Adler was a founding member of the International Criminal Bar and belongs to the Canadian Society of Forensic Science, the Criminal Lawyers' Association, the International Bar Association, and the International Law Association.
- Adler was appointed to the federal Cross-Cultural Roundtable on Security from 2005 to 2015 and served as Director of National Affairs for the Canadian Friends of Simon Wiesenthal Center from 1999 to 2009.
- Kevin Gray holds a diploma in Public International Law (2015), was named a James Kent Scholar at Columbia Law School (2022), and received a Runnymede Fellowship (2020).
Lawyers 3
This firm’s lawyers at a glance
- Called to the bar
- 1975 · median 51 years in practice 1 of 3 lawyers
- Law schools
- Osgoode Hall Law School (2) 2 of 3 lawyers
- Languages on the roster
- Arabic, English, French, German
Who handles what
The neighbourhood
The office sits on Yonge Street in North York Centre, the stretch of Yonge north of Sheppard Avenue that became North York's downtown core after a wave of high-rise development. Mel Lastman Square, the North York Civic Centre, and the North York Central Library are all close by, and North York Centre subway station on Line 1 is a short walk from the building. For a firm whose caseload leans on extradition hearings and clients calling in from elsewhere in Ontario or from abroad, that direct subway and downtown connection matters more than a walk-in storefront presence would for a firm rooted in day-to-day neighbourhood traffic.
Frequently asked questions
- Does Leo Adler Law handle cases outside Canada?
- Yes. The firm's international practice covers extradition, the transfer of Canadians serving sentences abroad, and international drug and gun cases, though it doesn't handle extraditions between U.S. states.
- I've been charged with a crime in Ontario. Can Leo Adler Law defend me?
- The firm defends the range of Canadian criminal charges, including impaired driving, drug and gun offences, fraud and theft, domestic assault, sexual assault, and murder or manslaughter.
- Can Leo Adler Law help with a professional misconduct or regulatory complaint?
- Yes. The firm represents licensed professionals in healthcare, real estate, finance, and law who are facing regulatory investigations or disciplinary tribunals.
- Is someone available if I need a criminal lawyer outside business hours?
- The firm lists a 24/7 contact line and offers evening and weekend consultations.
- How long has Leo Adler been practising criminal law?
- Leo Adler was called to the Ontario bar in 1975 and has handled trials and appeals across Canada since then, including cases before the Supreme Court of Canada.
- Does anyone at the firm have an academic background in international law?
- Kevin Gray, who works at the firm as academic counsel, holds a PhD from Laval University, a law degree from Osgoode Hall, an LLM from Columbia Law School, and a diploma in public international law.
Where to find them
5200 Yonge St #200, North York, ON M2N 5P6 · 833-523-5759
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Legal AidListing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗