The mayor of Montreal is head of the executive branch of the Montreal City Council. The current mayor is Valérie Plante, who was elected into office on November 5, 2017, and sworn in on November 16. The office of the mayor administers all city services, public property, police and fire protection, most public agencies, and enforces all city and provincial laws within Montreal, Quebec. The mayor is directly elected by citizens, by a plurality of votes, for a four-year term. The mayor's office is located in Montreal City Hall.

Valérie Plante is a Canadian politician serving as the 45th and current mayor of Montreal since 2017. First elected to Montreal City Council in the 2013 election, she has served as leader of the Projet Montréal party since December 2016.