The Anglican Diocese of Quebec was founded by Letters Patent in 1793 and is a part of the Ecclesiastical Province of Canada of the Anglican Church of Canada, in turn a province of the Anglican Communion. In 1842, her jurisdiction was described as "Canada East" or "Lower Canada". The diocese comprises 720,000 square kilometres and took its present shape in 1850 with the carving off of what is now the Diocese of Montreal. It includes a territory of west to east from Magog to the Gaspe and the Magdalen Islands, south to north from the United States border to Kawawachikamach and several communities along the Lower North Shore.

The Anglican Church of Canada is the province of the Anglican Communion in Canada. The official French-language name is l'Église anglicane du Canada. In 2022, the Anglican Church counted 294,931 members on parish rolls in 1,978 congregations, organized into 1,498 parishes. The 2021 Canadian census counted 1,134,315 self-identified Anglicans, making the Anglican Church the third-largest Canadian church after the Catholic Church and the United Church of Canada.