The following is a list of people from Longueuil, Quebec.
A
- John Aird, banker
B
- Micheline Beauchemin, textile artist and weaver
- Yves Beauchemin, novelist
- Jean Béliveau, former Montreal Canadiens center (1950–71); member of the Hockey Hall of Fame
- Marco Berthelot, curler
- Daniel Berthiaume, former ice hockey goaltender
- Marilou Bourdon, singer
- Rosario Bourdon, cellist, violinist, conductor, arranger and composer
- Max Boyer, professional wrestler
- Daniel Brabant, former baseball player
- Richard Brodeur, former National Hockey League goaltender, known as 'King Richard' with the Vancouver Canucks (1980–87)
C
- Elisha Cuthbert, actor; played Kim Bauer on 24; grew up in Greenfield Park
- Steven Crowder, conservative political commentator on YouTube; grew up in Greenfield Park
D
- André Dallaire
- Pierre Deniger, politician
G
- Céline Galipeau, news presenter
- Garry Galley, former NHL player
- Bruno Gervais, professional ice hockey defenceman
- Claude Gladu, mayor
- Steve Green, professional baseball player
H
- Benoit Huot, swimmer
J
- Marlene Jennings, politician
K
- Anthony Kavanagh, actor
L
- Guy Laliberté, Cirque du Soleil founder and Chief Executive Officer
- Irina Lazareanu, model
- Patrick Leduc, soccer player
M
- Anthony Mantha, NHL player of the Detroit Red Wings
- Marie-Victorin, Christian brother and botanist
- Pauline Marois, former Taillon MNA
- Julie Masse, singer
- Torrey Mitchell, NHL player
- Isabelle Morneau, soccer player
N
- Craig Norman, basketball coach
O
- Nils Oliveto, actor, screenwriter
- Jacques Olivier, former mayor
P
- François Paré, author
- Kevin Parent, singer/songwriter
- André Pratte, journalist and economist
- Raymond Préfontaine, politician
R
- Stéphane Roy, electroacoustic music composer
S
- Caroline St-Hilaire, politician
- Myriane Samson, figure skater
- Julie Snyder, TV host
T
- Maxime Talbot, Pittsburgh Penguins hockey player
- Jack Todd, Montreal Gazette columnist
