The Government of Canada (French: gouvernement du Canada), formally His Majesty's Government (French: Gouvernement de Sa Majesté), is the body responsible for the federal administration of Canada. The term Government of Canada refers specifically to the executive, which includes ministers of the Crown (together in the Cabinet) and the federal civil service (whom the Cabinet direct); it is corporately branded as the Government of Canada. There are over 100 departments and agencies, as well as over 300,000 persons employed in the Government of Canada. These institutions carry out the programs and enforce the laws established by the Parliament of Canada.

The federal government's organization and structure was established at Confederation, through the Constitution Act, 1867, wherein the Canadian Crown acts as the core, or "the most basic building block", of its Westminster-style parliamentary democracy. The monarch, King Charles III is head of state and is personally represented by a governor general (currently Mary Simon). The prime minister (currently Mark Carney) is the head of government, who is invited by the Crown to form a government after securing the confidence of the House of Commons, which is typically determined through the election of enough members of a single political party in a federal election to provide a majority of seats in Parliament, forming a governing party. Further elements of governance are outlined in the rest of the Canadian constitution, which includes written statutes in addition to court rulings and unwritten conventions developed over centuries.

Constitutionally, the King's Privy Council for Canada is the body that advises the sovereign or their representative on the exercise of executive power. This task is carried out nearly exclusively by the Cabinet, which functions as the executive committee of the Privy Council that sets the government's policies and priorities for the country and is chaired by the prime minister. The sovereign appoints the members of Cabinet on the advice of the prime minister who, by convention, are generally selected primarily from the House of Commons (although often include a limited number of members from the Senate). During its term, the government must retain the confidence of the House of Commons and certain important motions, such as money bills and the speech from the throne, are considered as confidence motions. Laws are formed by the passage of bills through Parliament, which are either sponsored by the government or individual members of Parliament. Once a bill has been approved by both the House of Commons and the Senate, royal assent is required to make the bill become law. The laws are then the responsibility of the government to oversee and enforce.

Under Canada's Westminster-style parliamentary democracy, the terms government and Government of Canada refer specifically to the prime minister, Cabinet, and other members of the governing party inside the House of Commons, but typically includes the federal public service and federal departments and agencies when used elsewhere. This differs from the United States, where the executive branch is referred to as an administration and the federal government encompasses executive, legislative, and judicial powers, similar to the Canadian Crown.

In popular usage Canadians (especially under American influence) may refer to "the government" when speaking about the entire state, including not only executive but also the legislative and judicial branches and the civil service. More formally these would be referred the as the Crown or the Crown in Right of Canada. It is also common but erroneous to refer to "the Government of Canada" when speaking of all governmental bodies in Canada: Canada is a highly decentralized federation and the ten provincial and three territorial governments are very much separate from and act independently of the Canadian federal (central) government.

In press releases issued by federal departments, the government has sometimes been referred to as the current prime minister's government (e.g. the Trudeau Government). This terminology has been commonly employed in the media. In late 2010, an informal instruction from the Office of the Prime Minister urged government departments to consistently use, in all department communications, such phrasing (i.e., Harper Government, at the time), in place of Government of Canada. The same Cabinet earlier directed its press department to use the phrase Canada's New Government.

Canada is a constitutional monarchy, wherein the role of the reigning sovereign is both legal and practical, but not political. The monarch is vested with all powers of state and sits at the centre of a construct in which the power of the whole is shared by multiple institutions of government acting under the sovereign's authority. The executive is thus formally referred to as the King-in-Council.

On the advice of the Canadian prime minister, the sovereign appoints a federal viceregal representative—the governor general (currently Mary Simon)—who, since 1947, is permitted to exercise almost all of the monarch's royal prerogative; though, there are some duties which must be specifically performed by the monarch themselves (such as assent of certain bills). In case of the governor general's absence or incapacitation, the administrator of Canada performs the Crown's most basic functions.