The 2026 Chicoutimi provincial by-election was held on February 23, 2026. The seat was represented by Andrée Laforest of the CAQ until she resigned on September 4, 2025 to run for mayor in the 2025 Saguenay municipal election.
Marie-Karlynn Laflamme for the Parti Québécois won the election. It was the PQ 4th consecutive byelection win.
The district is located within the city of Saguenay and consists of part of the borough of Chicoutimi. The district was held by Union Nationale from 1936 to 1973 and the Parti Québécois from 1973 to 2018. The Coalition Avenir Québec took the seat in 2018 and held it in 2022.