William Wister
Senior Criminal Lawyer at Shim Law
Experienced Criminal Defence Lawyer in Calgary
William Wister is one of the most experienced lawyers at Shim Law, with over 30 years of experience in criminal law.
He has successfully handled major cases and complex appeal matters at every level of the criminal justice system. As a former (Chief) Crown Prosecutor in two different regions of Canada (Alberta and New Brunswick), Wister has gained extensive insight into prosecutorial strategies, courtroom procedures, and the intricacies of criminal law.
Beyond his legal practice, Wister remains deeply engaged in his community and is committed to mentoring future legal professionals. As a former instructor at Lethbridge College, he guided students through criminal law curriculum and ethical procedures.
Former Prosecutor Turned Defence Lawyer
With his extensive prosecutorial background, Wister understands how the Crown thinks and operates—an advantage he strategically applies to defending his clients. Whether handling a high-stakes trial, a complex appeal, or a major case, he is dedicated to achieving the best possible outcome for his clients.
If you need an experienced advocate for your criminal case or appeal, contact William Wister today to book a consultation.
Areas of Expertise
Legal Aid Alberta
Skilled in trial defence and appeals.
Experienced in serious and high-profile cases.
Builds strong, tailored defence strategies.
Protects clients in critical legal matters.
New Brunswick
Education & Bar Admission
University of New Brunswick
University of New Brunswick
York University – Osgoode Hall Law School
Université de Moncton
Notable Cases
To see examples of William's recent work
Why Choose Shim Law?
Our team has successfully defended clients across a wide range of criminal charges.
We specialize in criminal law and understand how to navigate the legal system.
Every case is unique, and we tailor our defence strategies to achieve the best possible outcome and to your needs.
We hold the prosecution to the highest standards, challenging the evidence, and fighting for your rights every step of the way.
Book Your Free 15-Minute Consultation Today
Trusted Criminal Defence in Calgary
If you or a loved one is facing criminal charges, don’t navigate the legal system alone. Shim Law is here to provide the experienced defence you need. Contact us today for a confidential consultation.