The legal drinking age in a liquor sales licensed establishment in the province of Ontario is 19 years of age. Serving people who are under 19 years of age is an offence under the Liquor Licence and Control Act, 2019.

In Toronto, which is located in the province of Ontario, the legal drinking age is 19 years old. This applies to the purchase, possession, and consumption of alcohol in all public venues, including bars, restaurants, and nightclubs, as well as at home. It is standard practice for establishments to "card" anyone who appears to be under the age of 30, so travelers should always carry a valid government-issued photo ID, such as a passport or a driver's license. This age limit is consistent with most other Canadian provinces, with the notable exceptions of Alberta, Manitoba, and Quebec, where the legal age is 18. In 2026, Ontario continues to enforce these laws strictly, and providing alcohol to a minor can result in significant fines for both the individual and the establishment involved. For those visiting from the United States, the lower drinking age often makes Toronto a popular destination for 19 and 20-year-old travelers.