Langelier is a station on the Green Line of the Montreal Metro rapid transit system operated by the Société de transport de Montréal (STM). It is in the district of Mercier-Ouest in the borough of Mercier–Hochelaga-Maisonneuve in Montreal, Quebec, Canada. The station opened on June 6, 1976, as part of the extension of the Green Line to Honoré-Beaugrand.