John Mazzilli was born in London, Ontario to Italian immigrant parents. He attended St. Bernadette and Notre Dame Elementary School and graduated from Catholic Central High School in London, Ontario. He is fluent in both English and Italian.
John learned the value of hard work that his parents instilled in their children. He began his business career at the age of 15 when he obtained several landscaping contracts for commercial developments during the summer months. John was also employed at a local grocery store while attending school.
John attended the University of Western Ontario. Immediately after university John joined a major Real Estate company in London, Ontario where he earned the prestigious Platinum Award for Excellence in Sales.
From a young age John has been politically involved and has always believed in government being accountable. He has actively participated in several political campaigns federally and provincially.
He managed a successful campaign for his brother, Frank Mazzilli, who represented the riding of London-Fanshawe for the Ontario Provincial Progressive Conservative Party from 1999 - 2003.
John then went on to pursue his interest of public service in 2002 and joined the office for the Chair of Management Board and Minister of Culture at Queen’s Park.
He is presently self-employed managing several residential and commercial properties in London, Ontario.