Deryck Williams Retired Partner Mississauga +1 416 360 4954

As an auditor and consultant, my mission is to help charities and not-for-profits increase their impact. I’m passionate about the critical role these organizations play in our society. They’ve been the focus of my work for more than 20 years.

I’m national leader of the charities and not-for-profit team at Grant Thornton, privileged to work with an exceptional team across the country who are committed to supporting the sector.  From big-picture strategy to operational issues, I work across the country with charities, faith-based groups, associations, agencies, schools and many other organizations that play a critical role for local, provincial, national and international stakeholder groups. 


I actively participate in my professional community as a member of the Chartered Professional Accountants (CPA) Not-for-Profit Risk Oversight and Governance Committee, a member of the CPA Canada Not-for-Profit Accounting Standards Advisory Committee, and treasurer of CanadaHelps.

We have been blessed with five children who have led us to participate in badminton, baseball, hockey, soccer, music, and acting to name a few. They continue to be the delight of our lives.  And when time permits I continue to play piano and bass guitar and pursue my interest in history.

  • CMC