Lamb & O'Brien Professional Corporation is a boutique Ottawa law firm that practises exclusively in criminal and regulatory law. Its lawyers have more than 45 years of combined experience representing individual, corporate, and institutional clients, and the firm was co-founded by Dominic Lamb and Meghan K. O'Brien in 2019.

Practice areas

Criminal Defence Administrative & Regulatory Law

Good to know

A person using a wheelchairWheelchair accessibleA professional woman in a suit beside a briefcaseWoman-ownedA laptop showing a video callVirtual appointmentsAn office interior with a desk and chairsIn-person services

Fees & payment

A clipboard with a speech bubble and a no-charge dollar coinFree consultation

Lawyers 4

Dominic Lamb Co-Founder Criminal DefenceAdministrative & Regulatory Law Jonathan Nadler Associate Criminal DefenceAdministrative & Regulatory Law Matt Ertel Associate Criminal DefenceAdministrative & Regulatory Law Meghan K. O'Brien Managing Principal Criminal DefenceAdministrative & Regulatory Law

Certified Specialists

A designation granted by the Law Society of Ontario, not a self-declared area of focus.

This firm’s lawyers at a glance

Called to the bar
2001–2025 · median 17 years in practice 4 of 4 lawyers
Law schools
University of Ottawa (3), University of Leicester 4 of 4 lawyers
Languages on the roster
English, French

Who handles what

Where to find them

180 Elgin Street, Suite 710, Ottawa, ON K2P 2K3 · 613-560-5982

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