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September 11, 2026Short & citedBlog
Civic Viewpoint.
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Civic Brief • Politics

Catherine Fournier (politician)

Catherine Fournier is a Canadian politician from Quebec who has served as mayor of Longueuil since 2021.

Updated September 11, 20261 min readCited sources

Catherine Fournier is a Canadian politician from Quebec who has served as mayor of Longueuil since 2021. She previously represented Marie-Victorin in the National Assembly, becoming the youngest woman ever elected to that body.

Who is Catherine Fournier?

Born in Sainte-Julie, Quebec, in 1992, Fournier studied economics and political science. She entered politics at 24, winning a by-election in 2016 as a Parti Québécois candidate for the riding of Marie-Victorin. She later sat as an independent sovereigntist.

Provincial career and record

Fournier served as MNA for Marie-Victorin from 2016 to 2021. She became the youngest woman ever elected to the National Assembly of Quebec. After the 2018 general election, she left the Parti Québécois caucus and continued as an independent, focusing on youth and civic engagement.

Mayor of Longueuil (2021–present)

Fournier won the Longueuil mayoralty on 7 November 2021 and was re-elected on 2 November 2025. Her tenure has emphasized municipal governance and public participation. She remains a prominent figure in Quebec politics, noted for her youth and sovereigntist background.

In short

  • First elected as MNA at age 24 in 2016
  • Youngest woman ever elected to Quebec's National Assembly
  • Elected mayor of Longueuil in 2021, re-elected in 2025
  • Former Parti Québécois member, later independent sovereigntist
Canadian angle

She is a prominent Quebec municipal and provincial politician, making her especially relevant to Canadian readers interested in Quebec politics and women in public office.

Quick questions

Who is Catherine Fournier?
A Canadian politician from Quebec, mayor of Longueuil since 2021 and former MNA for Marie-Victorin.
What party is Catherine Fournier?
She was first elected as a member of the Parti Québécois and later sat as an independent sovereigntist.
When was Catherine Fournier elected mayor?
She was elected mayor of Longueuil on 7 November 2021, and re-elected on 2 November 2025.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Catherine_Fournier_(Canadian_politician)
    Supports: Birth date, provincial political career, election as mayor, party history, and distinction as youngest woman elected to Quebec's National Assembly.
  2. Assemblée nationale du Québec — https://www.assnat.qc.ca/fr/deputes/fournier-catherine-16775/biographie.html
    Supports: Birth in 1992 and official biography details.
  3. Ville de Longueuil — https://www.longueuil.quebec/fr/mairesse
    Supports: Mayor of Longueuil since 2021, first election date, re-election date, and former role as MNA.
  4. Institut du Nouveau Monde — https://inm.qc.ca/catherine-fournier/
    Supports: Former MNA, independent status since 2019, and public profile.
  5. Ambition Québec — https://www.ambition.quebec/catherine-fournier
    Supports: Education, age at first election, and authorship/public engagement.