John Mark Keyes is a sessional professor at the Faculty of Law, University of Ottawa, and an instructor in the Legislative Drafting Program of Athabasca University. He has an LLB from the University of Toronto and a Diploma in Legislative Drafting and an LLM from the University of Ottawa.
Professor Keyes was previously legislative counsel in the Department of Justice (Canada) drafting regulations and government bills. He later occupied various managerial positions and was the Chief Legislative Counsel from 2005 until 2013. He has also written many academic articles and a monograph, Executive Legislation, the third edition of which was published by Lexis Nexis in 2021.