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Sheldon Wisener | Criminal Defence   
F: (905) 886-9540
Getting arrested or charged with a crime can be a frightening and confusing experience with very serious consequences. Sheldon Wisener has been defending clients facing a wide variety of criminal charges and has conducted trials in all levels of court. He was called to the Bar in 1986, and is a former Director of the Criminal Lawyers Association of Ontario. Sheldon Wisener was appointed to the Personal Rights Panel of the Office of the Children's Lawyer in 2003, and is a member of the Board of Directors of York Region Law Association. Mr. Wisener has been a part-time Assistant Crown Attorney since 1999, and is highly respected by judges, crown attorneys, and colleagues.

Sheldon Wisener is dedicated to fighting aggressively on your behalf and approaches each case as if it is his only case.

He has successfully defended persons charged with virtually every type of criminal offence including attempted murder, aggravated assault, domestic assault, assault with a weapon, sexual assault, robbery, break and enter, theft, fraud and drug trafficking for over 25 years. 


Our office is located in Thornhill, but we regularly attend courts in:








Oshawa and throughout southern Ontario.

Call Wisener Law Criminal Defence today at 905-886-9535 for a free 30 minute consultation!

defense lawyer for drug charges Markham

Edited by Admin

Hi, my son is a good kid, but he got mixed up with the wrong crowd and has gotten himself into some trouble with the law.  He is in a situation which involves drugs, and I’m looking for a lawyer who can help us. My son is under 18 and I didn’t even realize he could be charged like this at this age. Without getting into too many details, are young offenders and drugs one of your areas of expertise? Are you a lawyer that has defended youth charged with drug possession in Markham? 



By Wisener Law | Criminal Defence

Hi Mark,

Sorry to hear your family is going through this, but you are not alone. Over the past 30 years I have helped many young offenders facing drug charges. I can absolutely help you, and together we can get your son back on the right track. If the police have contacted you or your son, I would advise you to not give them a statement; instead please contact me directly at and we can discuss the next steps in detail.


Sheldon Wisener

7626A Yonge St, Thornhill, ON L4J 1V9