Canada's worst mass killing incidents

Ten people died including the shooter after a ​woman opened fire at a high school in western Canada on Tuesday before turning the gun on herself, police said.

The shooting in Tumbler Ridge, British Columbia, one of the deadliest mass ⁠casualty events in recent Canadian history, brought to Canada the type of mass shooting ⁠more common in neighbouring United States.

Below are some of Canada's ‌biggest mass killing incidents:

April 2025

Police officers work at the scene, after a vehicle drove into a crowd at the Lapu Lapu day block party, in which police say multiple people were killed and injured, in Vancouver, Canada.

Vancouver, British Columbia - Eleven people were killed and dozens injured when a man with a history of mental health issues rammed an SUV through a crowd at a Filipino community festival.

September 2022

A police forensics team investigates a crime scene after multiple people were killed and injured in a stabbing spree in Weldon, Saskatchewan, Canada.

Weldon, Saskatchewan - A stabbing spree left 10 people dead and injured 18 ​others, spanning 13 sites ⁠across the two tiny communities of James Smith Cree Nation and Weldon in rural Saskatchewan.

April 2020

Police personnel have arrived to help in Portapique, Nova Scotia.

Portapique, Nova Scotia - A gunman, who at one point masqueraded as a police officer, killed at least 16 people in the Canadian province of ⁠Nova Scotia ‌during a 12-hour rampage, in the country's worst modern-era mass shooting.

July 2018

Toronto, Ontario - A man walked down a busy Toronto street, shooting ‌randomly into restaurants. He killed two people and wounded 13 before turning his gun on himself.

January 2017

People take part in a vigil marking the fifth anniversary of the deadly shooting at the Quebec Islamic Cultural Centre, in Montreal on January 29, 2022.

Quebec City, Quebec - A man opened fire during evening prayers at a mosque, killing six people and wounding five. Twelve ‌others were treated for minor injuries.

January 2016

Dene High School in La Loche, Saskatchewan.

La Loche, Saskatchewan - A ‌student killed his two brothers at home before opening fire at a ‌remote community high school, killing two more people and wounding seven ‌others.

April 2014

Calgary, Alberta - The son of a long-serving member of Calgary's police force was arrested after five people at a house party were stabbed to death.

December 2014

Edmonton, Alberta - A man killed ⁠eight people, including ⁠his wife, before killing himself.

June 2014

Constables Douglas Larche, David Ross  and Fabrice Gevaudan.

Moncton, New Brunswick - A gunman killed three Royal Canadian Mounted Police (RCMP) officers and wounded two others.

March 2005

Mayerthorpe, Alberta - A man killed four RCMP officers who went to his home to execute a warrant to repossess property. The man then killed  himself.

April 1999

Ottawa, Ontario - A former employee of Ottawa's urban transit service killed four of his colleagues and wounded two others ​before taking his own life.

April 1996

Vernon, British Columbia - A man killed nine ​relatives gathered for the wedding of ​his estranged wife's sister and wounded two others before killing himself.

December 1989

Montreal, Quebec - A gunman killed 14 ​students, all female, and wounded 13 at the Ecole Polytechnique before committing suicide.