About Irwin Z. Isenstein, Barrister & Solicitor

Irwin Z. Isenstein, Barrister and Solicitor is a sole criminal law practice based in Toronto. Isenstein earned a Bachelor of Arts from the University of Manitoba in 1978, followed by an LL.B. in 1981, and was called to the Manitoba Bar in 1982. The early years of practice were split between two Winnipeg firms, practicing primarily criminal law, before a move to Toronto in late 1985. Isenstein was called to the Ontario Bar in 1986 and has practiced criminal law exclusively since then, working alongside other lawyers at times and as a sole practitioner at others.

The practice covers Criminal Code matters including impaired driving, driving with a blood alcohol level over 80 milligrams, refusing a breath sample, dangerous driving, assault and fraud, along with charges under the Controlled Drugs and Substances Act and criminal appeals to the Ontario Superior Court of Justice. It also takes on Highway Traffic Act charges such as careless driving, stunt driving, driving under suspension and driving without insurance. Isenstein has appeared as counsel at every level of court across Ontario, including a substantial number of matters in the province's Northwest Region, and has also defended cases in Alberta and Nova Scotia.

Practice areas

In the community

  • Isenstein served as a panelist in Law Society of Upper Canada continuing legal education programs on drinking and driving law, co-chairing the program in 2008 and chairing it from 2009 to 2012.

Good to know

A calendar with a checkmark beside a clockBy appointment

Where to find them

805-4789 Yonge Street, Toronto, Ontario M2N 0G3 · 416-230-4855

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This listing was generated by AI from public sources in August 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗

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