Azellus Denis, Canadian lawyer and politician, Postmaster General of Canada (died 1991)

Azellus Denis, was a Canadian politician who served in the Parliament of Canada as a Member of Parliament and Senator for the longest period of time, 55 years, 10 months and 20 days.

The Postmaster General of Canada was the Canadian cabinet minister responsible for the Post Office Department. In 1851, management of the post office was transferred from Britain to the provincial governments of the Province of Canada, New Brunswick, Newfoundland, Nova Scotia and Prince Edward Island. The position of Postmaster General was established in each province. With Canadian Confederation in 1867, a single position was created replacing this post in all of the above provinces except Newfoundland. this position was abolished in 1981 when the post office was transformed from a government department into a crown corporation. Since 1981 Canada Post has been led by a President and CEO. From 1900 until 1909 the Postmaster General was also responsible for the Department of Labour. It now reports to the Minister of Public Services and Procurement.