List of prime ministers of Canada in the context of "Prime minister of Canada"

Justin Pierre James Trudeau (born December 25, 1971) is a Canadian politician who served as the 23rd prime minister of Canada from 2015 to 2025. He led the Liberal Party from 2013 until his resignation in 2025 and was the member of Parliament (MP) for Papineau from 2008 until 2025.

Trudeau was born in Ottawa, Ontario, during the first premiership of his father, Pierre Trudeau. He attended Collège Jean-de-Brébeuf and holds a Bachelor of Arts degree in English from McGill University and a Bachelor of Education degree from the University of British Columbia. He then taught at the secondary school level in Vancouver before returning to Montreal in 2002 to further his studies. He served as chair for the youth charity Katimavik and as director of the not-for-profit Canadian Avalanche Association. In 2006, he was appointed as chair of the Liberal Party's Task Force on Youth Renewal. Trudeau was elected to represent the riding of Papineau in the House of Commons in the 2008 federal election. He became the Liberal Party's Official Opposition critic for youth and multiculturalism in 2009 and critic for citizenship and immigration in 2010. In 2011, he was appointed as a critic for secondary education and sport. In 2013, Trudeau was elected as the leader of the Liberal Party. He led the party to a majority government in the 2015 federal election, bringing the party from a third place finish in the previous election with the largest-ever numerical increase of seats by any party in a Canadian election. He became the second-youngest prime minister in Canadian history and the first to be the child of a previous prime minister.

The International Democracy Union (IDU; known as the International Democrat Union until September 2023) is an international alliance of centre-right to right-wing political parties. Headquartered in Munich, Germany, the IDU consists of 84 full and associate members from 65 countries. It is chaired by Stephen Harper, former prime minister of Canada. It has three affiliated international organizations (International Young Democrat Union, International Women's Democracy Union and SME Global) and six affiliated regional organizations (Union of Latin American Parties, Asia Pacific Democrat Union, Caribbean Democrat Union, Democrat Union of Africa, European People's Party and European Conservatives and Reformists Party).

The IDU allows "centre-right" conservative political parties around the world to establish contacts and discuss different views on public policy and related matters. Their stated goal is the promotion of "democracy and [of] centre-right policies around the globe". The IDU has some overlap of member parties with the Centrist Democrat International (CDI), but the CDI is more centrist, Christian democrat and communitarian than the IDU.