Jonathan Weisz

Jonathan B. Weisz

Toronto: 416.865.8157
Fax 416.865.7380


LLB, 1990
Osgoode Hall Law School

Bar Admissions

Ontario, 1992


Jonathan is head of the firm’s Project Finance Practice and chair of the firm's Finance Committee. He is recognized as one of Canada’s leading banking and finance lawyers. Jonathan’s practice focuses on project finance, project development and secured lending. He is the recipient of numerous Project Finance Magazine’s Deal of the Year Awards as well as the recipient of the Association for Financial Professionals (AFP) Pinnacle Award. Jonathan was an integral part of the team on a mining financing which, at the time of the transaction, was the largest ever in the world for a greenfield mining project.

Jonathan has advised on numerous transactions, in particular in the energy, infrastructure and mining industries. He has represented some of North America's most prominent energy companies and project finance lenders in a variety of transactions in Canada and abroad. Jonathan has worked in Latin America, for a year at a law firm in Sao Paulo, Brazil and for two years as Director of Project Development for an international energy company in the region.

Representative Work

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Chambers Canada—Leading lawyer in banking & finance (2016-2018); energy: power (transactional); project finance (2016-2020)

Chambers Global—Leading lawyer in energy: power (transactional) and project finance (2013-2019); banking & finance (2008-2016); and projects: PPP and infrastructure (2008-2013)

The Legal 500 Canada—Leading lawyer in banking and finance, energy and natural resources: power (2018-2020)

IFLR1000: The Guide to the World’s Leading Financial Law Firms—Highly regarded Canadian lawyer in project finance (2008-2020)

Best Lawyers in Canada—Leading lawyer in banking and finance law, energy law, project finance law (2010-2020)

Lexpert/American Lawyer’s Guide to the Leading 500 Lawyers in Canada—Leading practitioner in project finance (2011-2019), energy: electricity (2018-2019) and banking & financial institutions (2014-2018)

The Canadian Legal Lexpert Directory—Leading lawyer in project finance (2008-2019); energy (electricity) (2010-2019); banking & financial institutions (2011-2019); infrastructure law (2017-2019)

Lexpert/Thomson Canada’s Guide to the 100 Most Creative Lawyers in Canada—One of Canada’s 40 corporate lawyers to watch (2006)

Who’s Who Legal—Leading Canadian lawyer in project finance (2013-2017) and banking (2015)

Who’s Who Legal—Leading lawyer in project finance (2013)

Which Lawyer?—Leading lawyer in project finance (2012)

Which Lawyer? Yearbook—Recommended Canadian lawyer in banking and finance (2009-2010)

Which Lawyer? Yearbook—Recommended Canadian lawyer in banking law (2007)

Real Time News’ LawDay—Leading lawyer in energy/corporate (2009)

Legal Media Group’s Guide to the World’s Leading Project Finance Lawyers—Leading practitioner in project finance (2008)

Project Awards

Project Finance—2007 North American Nuclear Deal of the Year

Project Finance—2005 North American Transportation Deal of the Year

Project Finance—2000 Latin American Mining Deal of the Year


Lessons Learned and What’s Coming Next

Speaker, APPrO 25th Anniversary Canadian Power Conference and Networking Centre, Toronto

Project Finance/PPP Advanced Modeling

Presenter, Toronto


Professional Involvement

Jonathan was a member of the part-time faculty of Osgoode Hall Law School, York University, from 1997 to 1999.


The Canadian Solar Industries Association (CanSIA) (2011-2012).