Canada is a parliamentary democracy within a constitutional monarchy.
While some system of government include a president who acts as head of State, in Canada's system of constitutional monarchy, Her Majesty the Queen is Canada's head of State. The Queen is represented for most purposes by the Governor General of Canada (who is appointed by the Queen on the advice of the prime minister).
Although executive power is vested in the Queen (and thereby exercised by the Governor General), the use of executive power in Canada is done on the advice of the prime minister and other ministers who are responsible to the elected House of Commons. The prime minister acts as head of Government for Canada, and is accountable for Canada's political decisions and positions.
No president in Canada.
No president in Canada.
There was no president in Canada.
Canada has no president.
No president in Canada.
No president in Canada.
There was no president in Canada.
No president in Canada.
No president in Canada.
No president in Canada.
No president in Canada.
No president in Canada.