List of mayors of Longueuil

This article is a list about the mayors  of Longueuil, Quebec and the municipalities that were folded into Longueuil to make the current city.

History
Before 1961, seven separate communities existed to form what is today known as Longueuil. They merged over the following decades, and Longueuil reached its current state.

This section lists a series of mergers involving Longueuil. In italic is the surviving municipality.

1961-1969
On January 28, 1961, these communities merged, keeping Longueuil's namesake:
 * Longueuil
 * Montréal-Sud

1969-2001
In 1969, Longueuil merged again with another neighbouring city:
 * Longueuil
 * Ville Jacques-Cartier

In October, 1971, neighbouring Saint-Hubert had a merger as well:
 * Saint-Hubert
 * Laflèche

2002-2005
On January 1, 2002, Longueuil and seven other south shore municipalities merged:
 * Longueuil
 * Boucherville
 * Brossard
 * Greenfield Park
 * LeMoyne
 * Saint-Bruno-de-Montarville
 * Saint-Hubert
 * Saint-Lambert

2006-present
On January 1, 2006, four of the municipalities previously merged in 2002 voted to secede from Longueuil: Therefore, Longueuil is currently composed of:
 * Boucherville
 * Brossard
 * Saint-Bruno-de-Montarville
 * Saint-Lambert
 * Longueuil
 * Greenfield Park
 * LeMoyne
 * Saint-Hubert