Timothy Cullen

Partner @McMillan LLP

Ottawa, ON, CA

Timothy Cullen co-leads the firm’s Government and Public Policy Group as well as its Chambers-ranked Procurement Group. His practice has a significant focus on regulatory advice and litigation involving automotive safety and emissions regimes, public procurement, lobbying, and election law. Timothy is trusted by a wide range of private sector clients—including vehicle, tire, and car seat manufacturers, automotive parts suppliers, defence contractors and construction companies— who value his practical, actionable advice on navigating complex regulatory regimes and government processes.Timothy maintains a leading national automotive regulatory practice with deep expertise in the Motor Vehicle Safety Act and the Canadian Environmental Protection Act (vehicle emissions). He advocates for manufacturers with Transport Canada and Environment and Climate Change Canada and regularly assists clients responding to regulatory inquiries and investigations. He has represented automotive clients in enforcement actions and prosecutions involving Transport Canada, and the Public Prosecution Service of Canada.A Chambers ranked public procurement lawyer, Timothy advises private sector bidders through complex evaluations, debriefings, contract negotiations, and bid challenges. He works closely with municipalities, universities, hospitals, and other public institutions to design defensible procurements and resolve disputes. His experience acting for both buyers and suppliers gives him a balanced and practical perspective on how procurement decisions are made—and challenged.In the political integrity sphere, Timothy counsels clients on lobbying and election law compliance, as well as Canada’s new Foreign Influence Transparency Registry. He currently serves as chair of the City of Ottawa’s Election Compliance Audit Committee for the 2022–2026 term.

Carleton University

Master of Arts - MA, International Affairs (International Institutions and Global Governance cluster)

York University - Osgoode Hall Law School

Certificate in Public Procurement Law and Practice, Law

University of Ottawa

Juris Doctor (J.D.), Common Law (specialization in International Law)

University of Prince Edward Island

Bachelor of Arts, Political Studies, French

York University - Osgoode Hall Law School

Advanced Certificate in Public Procurement Law and Practice

York University - Osgoode Hall Law School

The Intensive Trial Advocacy Workshop