What is the legal drinking age in Ontario? 4 years ago Updated The legal drinking age in the Province of Ontario, Canada is 19 years of age. Related articles What is the legal age to Sell, Serve, Deliver or Handle alcohol in Ontario? I am purchasing or own a licensed establishment, do I need to be Smart Serve Certified? Do part-time and/or unpaid volunteers serving alcohol need to be Smart Serve Certified? Can a Certified person be fined/charged for over-serving or failing to obtain proper I.D.? Liquor Licence and Control Act, 2019 (LLCA)