What is the Royal Cypher in Canada?

The Royal Cypher is the personalised monogram of the reigning sovereign, used throughout Canada on government property, official documents, military uniforms, post boxes, and ceremonial items to signify that an item belongs to or operates under the authority of the Crown. The current Royal Cypher of King Charles III is CIIIR, an interlaced 'C' and 'III' surmounted by St. Edward's Crown, with the 'R' standing for Rex (King). It was approved by the King in September 2022 and confirmed for Canadian use shortly after his accession on September 8, 2022.

Each sovereign has a distinct Royal Cypher. Queen Elizabeth II used EIIR for the 70 years of her reign from 1952 to 2022. Earlier Canadian Cyphers include those of King George VI (GRVI, 1936-1952), King George V (GRV, 1910-1936), King Edward VII (ERVII, 1901-1910), and Queen Victoria (VRI, Victoria Regina Imperatrix, 1837-1901). Older buildings, post boxes, and stone walls in Canada still carry the Cyphers of past sovereigns as historical markers.

The Cypher appears on the cap badges of every branch of the Canadian Armed Forces, including the Royal Canadian Mounted Police, on the Mace of the House of Commons, on the King's Bench in superior courts, on Crown corporation seals, and on the Speech from the Throne. Government buildings owned by the federal Crown carry the Cypher on cornerstones, plaques, and flagpole bases. Crown copyright notices in federal publications use the formula 'His Majesty the King in Right of Canada'.

Updating the Cypher across federal property is a multi-year process. After Queen Elizabeth II's death the federal government began transitioning EIIR to CIIIR on everything from new uniforms and law enforcement badges to the obverse of circulating coinage, where the King's effigy first appeared in December 2023. Existing items are updated as they are replaced rather than all at once, preserving Cyphers of past sovereigns as part of Canadian heritage.