Victoria Day (in French: Fête de la Reine) is a federal Canadian public holiday celebrated on the last Monday before May 25, in honour of Queen Victoria's birthday. The date is also, simultaneously, that on which the current reigning Canadian sovereign's official birthday is recognized. It is sometimes informally considered as marking the beginning of the summer season in Canada.

The holiday has been observed since before Canada was formed, originally falling on the sovereign's actual birthday, and continues to be celebrated in various fashions across the country on the fixed date. In Quebec, the same day was, since the Quiet Revolution, unofficially known as Fête de Dollard until 2003, when provincial legislation officially named the same date as Victoria Day the National Patriots' Day. It is a statutory holiday federally, as well as in six of Canada's ten provinces and three of its territories.