Pink Line (Montreal Metro)

The Pink Line (French: Ligne rose) is a subway line proposal for the Montreal Metro in Quebec. First proposed by municipal councillor Sylvain Ouellet in September 2011, the Pink Line in its current form was a "central campaign promise" of the mayoral campaign of Valérie Plante, leader of the political party Projet Montréal and, since 2017, mayor of Montreal.

The project was initially projected to cost CA$5.9 billion and scheduled to open in 2025. The project was subsequently added to Quebec's 10-year infrastructure plan, and feasibility studies for the line's western section began in June 2021. Since then, the project has been altered and a competing segment on the REM has also been proposed, bringing into question as to what form the Pink Line will take. As of 2025, the project remains in the official transit plan, but there is no timeline as to when it will be built.

The proposed route of the line would traverse many Montreal neighbourhoods. It would start in Montreal North, and travel southwest through the city, with connections to the blue line extension, Mont-Royal metro station, and Place-des-Arts station. Given this routing, the section from Montreal North to Pie-IX is generally seen as the successor to the cancelled White Line originally proposed in the 1980s. A second phase of the project would travel southwest from Downtown Montreal, through Westmount, the Notre-Dame-de-Grâce neighbourhood, Montreal West, and end at Lachine. This would be the first Montreal Metro line with above-ground stations.