The Sergeants-at-Arms of the House of Commons of Canada is a senior officer for the legislative body appointed by Governor General-in-Council through letter patent under the Great Seal of Canada.
[1] The Sergeant-at Arms assists the Clerk of the House of Commons as head of parliamentary precinct services, performing certain administrative and ceremonial functions, and maintaining order and security in the parliamentary buildings.
[1] Ceremonial functions performed by the sergeant-at-arms includes administering the Canadian oath of allegiance to newly elected members of the House of Commons.
All previous appointees previously held positions in the Canadian military or the Royal Canadian Mounted Police;[1] although there is no requirement that requires appointees to be drawn from these services.
The current Sergeant-at-Arms is Pat McDonell, who was formally appointed to the position in July 2019.