The Leader of the Government in the House of Commons (French: Leader du gouvernement à la Chambre des communes), more commonly known as the Government House Leader, is the Cabinet minister responsible for planning and managing the government's legislative program in the Canadian House of Commons. The position is not legally entitled to cabinet standing on its own, so all Government House Leaders must simultaneously hold another portfolio. In recent years, sinecure assignments have been used to give House Leaders cabinet standing while allowing them to focus entirely on house business. The current House Leader is Dominic LeBlanc.

The Government House Leader works on the government's behalf by negotiating with the House Leaders of the Opposition parties. This often includes discussion over timetables and may include concessions to demands by opposition parties to ensure quick passage of a bill or opposition support. The position is especially crucial during periods of minority government, when no party has a majority in the House and the government must rely on the support of one or more Opposition parties to not only pass its legislative agenda but remain in power. The holder of the position must be an expert in parliamentary procedure in order to argue points of order before the Speaker of the House of Commons as well as be a good strategist and tactician in order to outmanoeuvre the opposition parties.

From 1867 until World War II, the Prime Minister of Canada took upon himself the responsibilities of being Leader of the Government in the House of Commons, organizing and coordinating House of Commons business with the other parties. The expansion of government responsibilities during the war led to Prime Minister William Lyon Mackenzie King deciding to delegate the House leadership to one of his ministers. In 1946, the position of Government House Leader was formally recognized. In 1968, Prime Minister Pierre Trudeau designated the Government House Leader as President of the Queen's Privy Council for Canada.

Under Prime Minister Brian Mulroney, the roles of Government House Leader and President of the Privy Council were separated in 1989. Under Mulroney and his successors, the position of House Leader would often be held by someone who was named a Minister of State without any portfolio responsibilities specified. Since 2003, this Minister of State status has been obscured in all but the most official circumstances by the use of a "Leader of the Government in the House of Commons" style in its place.

Prime Minister Paul Martin's first House Leader, Jacques Saada was also Minister responsible for Democratic Reform; however, with the election of a minority government in the 2004 election, he appointed Tony Valeri to the position of Leader of the Government in the House of Commons with no additional responsibilities.

Liberal Leaders of the Government in the House of Commons

Prime Minister William Lyon Mackenzie King October 14, 1944 to November 15, 1948

• Ian Alistair Mackenzie (October 14, 1944 to April 30, 1948)
• Alphonse Fournier (May 1, 1948 to November 15, 1948)

Prime Minister Louis St. Laurent November 15, 1948 to April 12, 1957

• Alphonse Fournier (November 15, 1948 to May 8, 1953)
• Walter Edward Harris (May 9, 1953 to April 12, 1957)

Progressive Conservative Leaders of the Government in the House of Commons

Prime Minister John G. Diefenbaker October 14, 1957 to February 5, 1963

• Howard Charles Green (October 14, 1957 to July 18, 1959)
• Gordon Minto Churchill (January 14, 1960 to February 5, 1963)

Liberal Leaders of the Government in the House of Commons

Prime Minister Lester B. Pearson May 16, 1963 to April 23, 1968

• Jack Pickersgill (May 16, 1963 to December 21, 1963)
• Guy Favreau (February 18, 1964 to October 29, 1964)
• George James McIlraith (October 30, 1964 to May 3, 1967
• Allan MacEachern (1st time) (May 4, 1967 to April 23, 1968)

Prime Minister Pierre Elliot Trudeau September 12, 1968 to March 26, 1979

• Donald Stovel Macdonald (September 12, 1968 to September 23, 1970)
• Allan MacEachern (2nd time) (September 24, 1970 to May 9, 1974)
• Mitchell Sharp (August 8, 1974 to September 13, 1976)
• Allan MacEachern (3rd time) (September 14, 1976 to March 26, 1979)

Progressive Conversvative Leader of the Government in the House of Commons

Prime Minister Joe Clark June 4, 1979 to March 2, 1980

• Walter Baker (June 4, 1979 to March 2, 1980)

Liberal Leaders of the Government in the House of Commons

Prime Minister Pierre Elliot Trudeau March 3, 1980 to June 29, 1984

• Yvon Pinard (March 3, 1980 to June 29, 1984)

Prime Minister John Turner June 30, 1984 to November 4, 1984

• André Ouellet (June 30, 1984 to November 4, 1984)

Progressive Conversvative Leaders of the Government in the House of Commons

Prime Minister Brian Mulroney November 5, 1984 to June 24, 1993

• Ray Hnatyshyn (November 5, 1984 to June 29, 1986)
• Don Mazankowski (June 30, 1986 to April 2, 1989)
• Doug Lewis (1st time) (April 3, 1989 to February 22, 1990)
• Harvie Andre (February 23, 1990 to June 24, 1993)

Prime Minister Kim Campbell June 25, 1993 to November 3, 1993

• Doug Lewis (2nd time) (June 25, 1993 to November 3, 1993)

Liberal Leaders of the Government in the House of Commons

Prime Minister Jean Chrétien November 4, 1993 to December 11, 2003

• Herb Gray (November 4, 1993 to April 27, 1997)
• Don Boudria (1st time) (June 11, 1997 to January 14, 2002)
• Ralph Goodale (January 15, 2002 to May 25, 2002)
• Don Boudria (2nd time) (May 26, 2002 to December 11, 2003)

Prime Minister Paul Martin December 12, 2003 to January 23, 2006

• Jacques Saada (December 12, 2003 to July 20, 2004)
• Tony Valeri (July 20, 2004 to January 23, 2006)

Conversvative Leaders of the Government in the House of Commons

Prime Minister Stephen Harper February 6, 2006 to November 4, 2015

• Rob Nicholson (February 6, 2006 to January 4, 2007)
• Peter Van Loan (1st time) (January 4, 2007 to October 29, 2008)
• Jay Hill (October 30, 2008 to August 6, 2010)
• John Baird (August 6, 2010 to May 18, 2011)
• Peter Van Loan (2nd time) (May 18, 2011 to November 4, 2015)

Liberal Leader of the Government in the House of Commons

Prime Minister Justin Trudeau November 4, 2015 to Present

• Domenic A. LeBlanc (November 4, 2015 to Present)