List of federal political parties in Canada

In contrast with the political party systems of many nations, Canadian political parties at the federal level are often only loosely connected with parties at the provincial level, despite having similar names. One exception is the New Democratic Party, which is organizationally integrated with most of its provincial counterparts including a shared membership.

These are all of the political parties registered with Elections Canada as of 22 March 2017.

The Canadian Senate has two additional parliamentary groups, the Senate Liberal Caucus (consisting of senators who are members of the Liberal Party but not affiliated with the Liberal Party of Canada) and the Independent Senators Group (a group which organizes and funds non-partisan senators). Both are unaffiliated with other Canadian political parties, are not registered with Elections Canada, and do not run candidates in Canadian federal elections. Conservative senators remain formally affiliated with the Conservative Party of Canada.

The following parties do not appear on the federal election archive. They either did not run candidates in any election or ran candidates as independents.

The Communist Party of Canada changed its name multiple times in its history. It was founded as the Communist Party of Canada in 1921. From 1938 until 1943 its candidates ran under the banner Unity or United Progressive. In 1943 it adopted the name Labor-Progressive Party. It won one seat under this name in 1945. In 1959 it reverted to the name Communist Party of Canada and has kept that name to the present.

The Marxist–Leninist Party of Canada unofficially uses the name "Communist Party of Canada (Marxist–Leninist)", but Elections Canada does not allow it to be registered by that name because of potential confusion with the Communist Party of Canada.

Labour Party candidates ran under numerous different designations:

During Robert Borden's coalition government of 1917-1920, the Liberal Party of Canada split into two groups: the Liberal–Unionist who supported the coalition and the Laurier Liberals who opposed it.

Some Liberal-Progressive candidates used the designations:

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