Why Is The King On Canadian Coins?

By GovMint :

In Canada, the tradition of featuring the reigning British monarch on coins dates back to the country's historical ties to the British monarchy. As a member of the Commonwealth, Canada recognizes the British monarch as its head of state and is technically a constitutional monarchy. This long-standing practice of showcasing the monarch's image on Canadian coins is a way to honor and celebrate the connection between Canada and the British monarchy, while highlighting the traditions and continuity of Canadian coin designs.

Sources Used:

https://www.mint.ca/en/discover/faces-of-the-monarch