The coat of arms of Canada, also known as the Royal Coat of Arms of Canada or, formally, as the Arms of His Majesty The King in Right of Canada, is the arms of dominion of the Canadian monarch and, thus, also the official coat of arms of Canada. In use since 1921, it is closely modelled after the royal coat of arms of the United Kingdom, with French and distinctive Canadian elements replacing or added to those derived from the British version.
The maple leaves in the shield, blazoned "proper" (i.e., in natural colour), were originally drawn vert (green), but were redrawn gules (red) in 1957 and a circlet of the Order of Canada was added to the arms for limited use in 1987. The arms are registered with the Canadian Heraldic Authority and protected under Crown copyright; they are used to signify national sovereignty and the federal government uses the arms to represent the state under the Federal Identity Program. Elements of the coat of arms are also used in other designs, with the shield being used in the various royal standards belonging to members of the royal family and the crest of the arms serving as the focal point of the governor general's flag.
History
thumb|The [[Flag of France#Kingdom of France|Royal Banner of France from 1589 to 1792, with the three fleurs-de-lis replicated on the present Canadian coat of arms]]
Prior to Confederation in 1867, the royal coat of arms of the United Kingdom served in Canada as the symbol of royal authority. Arms had not been granted to any of the colonies in British North America, apart from 17th century grants to Nova Scotia and Newfoundland. Arms were then granted by royal warrant, on 26 May 1868, to Ontario, Quebec, Nova Scotia, and New Brunswick. (That Nova Scotia had previously been granted arms was forgotten and it took until 1929 for the historic arms granted in the 17th century to be reinstated. which were used on the first Red Ensign carried by Canadian troops at Vimy Ridge in 1917.
As more provinces and territories joined Canada, the original four arms were marshalled with the arms of the new members of Confederation, eventually resulting in a shield with nine quarterings. A committee, which included Dominion Archivist Arthur Doughty, was formed in 1919 to pursue the issue, eventually agreeing that the elements of the new arms would reference the royal arms of England, Ireland, Scotland, and France, with maple leaves representing Canada, though there was at the time no consensus on how the leaves were to be used. the committee records were preserved with Library and Archives Canada. with the addition of maple leaves in the base and the reference to the French royal arms in the fourth quarter.
Eugène Fiset, the Deputy Minister of Defence, claimed in 1918 that the design of the arms would determine the national colours of Canada and an unnamed member of the committee stated, "the colours of the shield will become the national colours of the Dominion [...] the red maple leaf has been used in service flags to denote men who have sacrificed their lives for the country [...] The case for white is that it contains an allusion to snow, which is characteristic of our climate and our landscape in certain seasons." In the 1940s, military historian Archer Fortescue Duguid suggested King George V had chosen red and white as Canada's official colours because those were the colours in the wreath and mantling on the arms. However, Forrest Pass, a curator at Library and Archives Canada, determined there is no record of either the King or the committee giving much importance to the mantling and the royal proclamation of the coat of arms makes no mention of national colours, specifically.