About Mary Murphy Law

Mary Murphy Law is a sole practitioner criminal defence firm run from an office at 700 Bay Street in downtown Toronto. Mary Murphy was called to the bar in Ontario in 1989 and has restricted the practice to criminal defence since 1994, working as a sole practitioner throughout that time.

The practice covers a broad range of criminal charges, from assault, theft, and fraud to more serious matters such as murder, weapons offences, and drug trafficking. Mary Murphy also represents young people facing charges under the Youth Criminal Justice Act and takes on cases before the Ontario Review Board, where a client has been found not criminally responsible. Legal Aid Ontario lists the certified areas of practice as criminal, criminal mental health, criminal youth, extremely serious matters, Gladue, and Ontario Review Board matters.

Mary Murphy is a member in good standing with the Law Society of Ontario and belongs to the Criminal Lawyers' Association, the Toronto Lawyers Association, and the Law and Mental Disorder Association.

Practice areas

Milestones & recognition

  • Called to the bar in Ontario in 1989.
  • Sole practitioner with a practice restricted to criminal defence since 1994.
  • Certified by Legal Aid Ontario for extremely serious matters and Ontario Review Board cases.

Good to know

A calendar with a checkmark beside a clockBy appointment

Who handles what

The neighbourhood

The office is in a multi tenant tower at 700 Bay Street, at the corner of Bay and Gerrard Street in what the building's own leasing materials call Toronto's Bay Street Corridor. The leasing listing describes the location as close to the University of Toronto and Queen's Park, with retail and restaurants nearby, and markets the building to medical, legal, financial, and insurance offices. It's described as steps from the subway, with bus stops at the door for clients coming from other parts of the city.

Frequently asked questions

What kind of cases does Mary Murphy Law handle?
The firm handles criminal defence exclusively, covering charges from assault, theft, and fraud through to more serious offences such as murder, weapons charges, and drug trafficking.
Does Mary Murphy Law represent young people charged under youth justice law?
Yes. The firm takes on Youth Criminal Justice Act matters for clients who are minors.
Can the firm help with an Ontario Review Board hearing or a not criminally responsible finding?
Yes. Mary Murphy Law represents clients in Ontario Review Board proceedings where a person has been found not criminally responsible.
How long has Mary Murphy been practicing criminal law?
Mary Murphy was called to the Ontario bar in 1989 and has practiced criminal defence exclusively since 1994.
How do I book a consultation with Mary Murphy Law?
The firm offers an initial 30 minute consultation, in person or remotely, and asks that people call or e-mail to arrange an appointment.
Where is Mary Murphy Law located?
The office is at 700 Bay Street, Suite 405, in downtown Toronto, and is open by appointment only.

Where to find them

700 Bay St., Suite 405, Toronto, ON, Canada M5G 1Z6 · 416-926-1818

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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 ↗