Member of Parliament (post-nominal letters: MP; French: député, [depyte]) is a term used to describe an elected politician in the House of Commons of Canada, the lower house of the Parliament of Canada.

Seats are distributed among the provinces in proportion to population, as determined by each decennial census, subject to the following exceptions made by the Constitution of Canada.

The oath for members of Parliament has stood the same since confederation; according to Section IX.128 of the Constitution Act, 1867: "Every member of the Senate and the House of Commons of Canada shall before taking his Seat therein take and subscribe before the Governor General or some Person authorized by him, and every Member of a Legislative Council or Legislative Assembly of any Province shall before the Lieutenant Governor of the Province or some Person authorized by him, the Oath of Allegiance contained in the Fifth Schedule to the Act.

The oath reads as follows:I, [name], do swear, that I will be faithful and bear true allegiance to His Majesty King Charles III.

[5]For those parliamentarians whose religion prohibits the swearing of oaths, there exists a compromise affirmation, first instituted in 1905: I, [name], do solemnly, sincerely and truly affirm and declare the taking of an oath is according to my religious belief unlawful, and I do also solemnly, sincerely and truly affirm and declare that I will be faithful and bear true allegiance to His Majesty King Charles III.