About John M. Gray

John M. Gray is a solo civil litigation and wills and estates practice based in Mississauga's City Centre district, on Village Centre Court near Square One and the Mississauga Civic Centre. John M. Gray graduated from the University of Windsor Law School in 1991, was called to the Ontario bar in 1993, and worked in the civil litigation department of a larger Mississauga law firm before opening the current practice in 1996. For almost 30 years the firm has served clients across Peel and Halton, appearing at all levels of the Ontario court system for institutions, corporations, and individuals.

The litigation side covers construction liens and breach of trust claims, shareholder and partnership disputes, commercial lease matters, and employment and wrongful dismissal. Several of the firm's cases have produced reported decisions on CanLII and in the Ontario Judgments series, including a 2014 Superior Court ruling on a construction breach of trust claim and a 2016 commercial landlord and tenant decision. On the estates side, John M. Gray prepares wills and powers of attorney and handles probate applications, passing of accounts, and estate and power of attorney litigation, and is a Commissioner for Taking Oaths and a Notary Public. The firm does not take Small Claims Court cases or offer free consultations.

Milestones & recognition

  • John M. Gray graduated from the University of Windsor Law School in 1991 and was called to the Ontario bar in 1993.
  • John M. Gray worked in the civil litigation department of a larger Mississauga law firm before opening the current practice in 1996.
  • John M. Gray is a Commissioner for Taking Oaths and a Notary Public.
  • The firm's litigation work has produced reported decisions, including a 2014 Ontario Superior Court ruling on a construction breach of trust claim (Wall 2 Wall Construction Ltd. v. McConnell Contract Interiors Ltd.) and a 2016 commercial landlord and tenant decision (Michele's Italian Ristorante Inc. v. 1272259 Ontario Ltd.).

In the community

  • John M. Gray volunteered as a basketball coach for over 20 years.
  • John M. Gray served on the Mississauga Minor Basketball Association Board of Directors, including two years as president.
  • John M. Gray received the Mississauga Minor Basketball Association's Roger Grochmal Volunteer of the Year award and the City of Mississauga's Outstanding Contribution to Community Sport award, both in 2001.
  • John M. Gray received a Basketball Ontario Recognition Award in 2003 for outstanding dedication to the game of basketball and valuable contribution to Basketball Ontario.

Good to know

A person using a wheelchairWheelchair accessibleA calendar with a checkmark beside a clockBy appointment

The neighbourhood

The office sits on Village Centre Court in Mississauga's City Centre, the planned downtown core that grew up around Square One Shopping Centre, which opened in 1973, and the Mississauga Civic Centre, completed in 1987. It's a district built from farmland into office towers and high rise condominiums rather than a historic main street, and it now doubles as Mississauga's municipal seat and commercial hub. That mix suits a practice that splits its time between commercial litigation for local businesses and wills, powers of attorney, and estate work for the growing residential population in the surrounding towers.

Frequently asked questions

What areas of law does John M. Gray handle?
John M. Gray handles civil litigation and wills, estates, and powers of attorney work for clients in Mississauga, Peel, and Halton. Litigation covers contract disputes, construction liens, employment and wrongful dismissal, and shareholder and partnership disputes, while the estates side covers will and power of attorney preparation, probate, passing of accounts, and estate litigation.
I'm in a dispute with a contractor over a construction lien in Mississauga. Can the firm help?
John M. Gray represents clients in construction lien and breach of trust claims, among other commercial litigation matters, and has appeared at all levels of the Ontario court system on cases like this. The firm's reported cases page lists a 2014 Superior Court decision arising from a construction breach of trust dispute.
Can John M. Gray prepare my will and power of attorney?
John M. Gray prepares wills and powers of attorney and can also help with probate applications, passing of accounts, and estate or power of attorney disputes. John M. Gray is a Commissioner for Taking Oaths and a Notary Public, which covers document swearing and certification that often comes up in estate work.
Does the firm take Small Claims Court cases or offer a free consultation?
John M. Gray does not take on Small Claims Court matters or offer free initial consultations. The practice focuses on civil litigation in the higher courts and on wills and estates work instead.
How long has John M. Gray been practising in Mississauga?
John M. Gray has practised in Mississauga for almost 30 years, opening the current firm in 1996 after graduating from the University of Windsor Law School in 1991 and being called to the Ontario bar in 1993.
I think a relative's estate isn't being handled properly. Can the firm help with estate litigation?
John M. Gray handles estate and power of attorney litigation, including disputes over the passing of accounts, in addition to the firm's regular estate planning and administration work for Peel and Halton clients.

Where to find them

4291 Village Centre Ct Suite 100, Mississauga, Ontario L4Z 1S2 · 905-270-5044

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Listing compiled from the firm’s public website in September 2026. Verify licence status in the Law Society of Ontario directory ↗