
Marni Munsterman (o/k/a) Munsterman Law
Marni Munsterman is a fierce criminal defence advocate with over 20 years of experience. Her practice approaches criminal defence with a unique emphasis on mental health.
Munsterman Law is a criminal defence law firm providing legal defence services in the Ottawa and Ottawa Valley Region (including Pembroke, Renfrew, L'Orignal, Perth, Brockville and Cornwall). The firm occasionally offers services outside of these jurisdictions. Please contact the firm to confirm if we provide representation in your area.
The firm prides itself on adaptability and commitment to excellence.
Explore our services and discover how we can contribute to your defence.
Meet our team

Marni D. Munsterman
Founder, Principal Lawyer
With over 25 years of dedicated practice, Marni is a seasoned criminal defence lawyer focusing on representing clients with mental health challenges.
She practices Criminal Law and provides representation at the Ontario Review Board and Consent and Capacity Board.
Marni's extensive experience allows her to navigate the complexities of the legal system while advocating for individuals who need understanding and informed representation.
Marni is committed to protecting the rights of her clients and ensuring they receive fair treatment, both in and out of the courtroom.
By combining legal expertise with compassion, Marni helps clients to achieve the best possible outcomes for their cases, no matter how challenging the circumstances may be.
Kiana Burton
Licensed Paralegal
Kiana is a Licensed Paralegal at Munsterman Law, providing reliable and professional legal services for criminal summary offences and provincial offence violations.
Dedicated to delivering client-focused support, Kiana is committed to navigating the complexities of the legal system with efficiency and precision. Whether you’re facing challenges with minor criminal matters or provincial offences, Kiana offers the expertise and guidance you need to achieve the best possible outcome.
Kiana is devoted to defending her clients' rights and ensuring they receive just and equitable treatment in all aspects, throughout legal proceedings and thereafter.
Let Kiana's passion for justice and proven experience work for you.


Siobhan Sadler
Legal Assistant
Siobhan serves as the firm's frontline intake specialist and scheduling coordinator, acting as the initial point of contact for the firm's correspondence. She brings exceptional organizational expertise and plays a pivotal role in ensuring efficient case management, making her an invaluable member of the Munsterman Law team.
Address
800-85 Albert Street
Ottawa, ON K1P 6A4
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