| Date | Name | City | Province | Licensed | Victims | Deaths | Injuries | Suicide | Firearms | OIC Impact |
|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | Unknown | Richmond Hill | ON | 2 | 2 | 0 | ||||
| 2024 | D’Souza | Ottawa | ON | No | 6 | 6 | 1 | No | No | No |
| 2024 | Bilcke | Stratford | ON | Yes | 1 | 2 | 2 | Yes | Yes | No |
| 2024 | Unknown | Scarborough | ON | 2 | 2 | 2 | Yes | |||
| 2024 | Walsh | Harrow | ON | 3 | 4 | 0 | Yes | Yes | ||
| 2024 | Unknown | Etobicoke | ON | No | 2 | 2 | 5 | No | Yes | No |
| 2024 | Duong | Vaughan | ON | No | 2 | 2 | 2 | No | Yes | No |
| 2024 | Kats | North York | ON | No | 2 | 3 | 0 | Yes | Yes | No |
| 2024 | Kongolo | Toronto | ON | No | 2 | 2 | 1 | No | Yes | No |
| 2024 | Massicotte | Richmond Hill | ON | No | 2 | 3 | 0 | Yes | No | No |
| 2024 | Ayala | Etobicoke | ON | No | 2 | 2 | 0 | No | No | |
| 2023 | Unknown | Pembroke | ON | 2 | 2 | 1 | ||||
| 2023 | Brekka | Hamilton | ON | Yes | 2 | 3 | 0 | No | Yes | Yes |
| 2023 | Hallaert | Sault Ste. Marie | ON | No | 4 | 5 | 0 | Yes | Yes | No |
| 2023 | Unknown | Caledon | ON | 2 | 2 | 1 | No | Yes | ||
| 2023 | Unknown | Ottawa | ON | No | 2 | 2 | 6 | No | Yes | No |
| 2023 | Charlton | London | ON | 1 | 2 | 0 | Yes | |||
| 2023 | Ayo Aden Ezbon | Bowmanville | ON | No | 0 | 2 | 0 | No | Yes | No |
| 2023 | Collias | Scarborough | ON | No | 2 | 2 | 1 | No | No | No |
| 2022 | Unknown | Oshawa | ON | 2 | 2 | 3 | No | Yes | ||
| 2022 | Francis | Vaughan | ON | 2 | 2 | 1 | Yes | |||
| 2022 | Edwin | Toronto | ON | Yes | 2 | 2 | 0 | No | Yes | |
| 2022 | Sig-Od | Toronto | ON | No | 2 | 2 | 1 | No | No | No |
| 2022 | Petry | Mississauga | ON | No | 3 | 4 | 3 | No | Yes | No |
| 2022 | Unknown | Etobicoke | ON | 2 | 2 | 1 | No | No | No | |
| 2022 | Unknown | Sault Ste. Marie | ON | 1 | 2 | 0 | Yes | Yes | ||
| 2022 | Doncaster | Innisfil | ON | 2 | 3 | 0 | Yes | No | ||
| 2022 | Unknown | Toronto | ON | 1 | 1 | 2 | Yes | |||
| 2022 | Unknown | Ottawa | ON | 2 | 2 | 1 | No | Yes | ||
| 2022 | Desormeaux | Sudbury | ON | 2 | 3 | 0 | Yes | Yes | ||
| 2022 | Villi | Vaughan | ON | Yes | 5 | 6 | 1 | No | Yes | No |
| 2021 | Veltman | London | ON | 4 | 4 | 1 | No | No | No | |
| 2020 | Lapa | Oshawa | ON | 4 | 5 | 1 | Yes | Yes | ||
| 2019 | Zaman | Markham | ON | 4 | 4 | 0 | No | No | No | |
| 2019 | Williams | Toronto | ON | No | 2 | 2 | 0 | No | Yes | |
| 2018 | Unknown | Etobicoke | ON | 2 | 2 | 2 | Yes | |||
| 2018 | Hussain | Toronto | ON | No | 2 | 3 | 13 | Yes | Yes | No |
| 2018 | Minassian | Toronto | ON | 11 | 11 | 15 | No | No | No | |
| 2018 | Jones | Burk's Falls | ON | Yes | 3 | 4 | 0 | Yes | Yes | No |
| 2016 | Ryan | Scarborough | ON | 3 | 3 | 1 | No | No | No | |
| 2016 | Unknown | Toronto | ON | 2 | 2 | 2 | Yes | |||
| 2016 | Milroy | Stoney Creek | ON | 2 | 3 | 1 | Yes | Yes | ||
| 2015 | Unknown | Toronto | ON | 2 | 2 | 3 | Yes | |||
| 2015 | Borutski | Eastern Ontario | ON | No | 3 | 3 | 0 | No | Yes | No |
| 2014 | Zehaf-Bibeau | Ottawa | ON | 1 | 2 | 3 | No | Yes | No | |
| 2012 | Gangs | Danzig | ON | No | 2 | 2 | 22 | No | Yes | No |
| 2012 | Husbands | Toronto | ON | No | 2 | 2 | 5 | No | Yes | No |
| 2009 | Shafia Family | Kingston | ON | 4 | 4 | 0 | No | No | No | |
| 2007 | Manners | Toronto | ON | No | 1 | 1 | 0 | No | Yes | No |
| 2007 | Imeson | London | ON | No | 3 | 3 | 0 | No | Yes | No |
| 2006 | Bandidos | Shedden | ON | No | 8 | 8 | 0 | No | Yes | No |
| 2006 | LaFleche | Aurora | ON | 3 | 3 | 0 | No | No | No | |
| 2004 | Unknown | North York | ON | No | 0 | 0 | 1 | No | Yes | Yes |
| 2002 | Kiss | Grimbsy | ON | No | 4 | 5 | 0 | Yes | Yes | No |
| 1999 | Lebrun | Ottawa | ON | Yes | 4 | 5 | 2 | Yes | Yes | No |
| 1996 | Palma | Toronto | ON | Yes | 3 | 3 | 0 | No | Yes | No |
| 1992 | Dombroskie | Waterlook | ON | 3 | 3 | 0 | No | Yes | ||
| 1991 | Yeo | Hamilton | ON | 2 | 3 | 0 | Yes | Yes | No | |
| 1990 | Peters | Ontario | ON | 2 | 2 | 1 | No | No | No | |
| 1975 | Slobodian | Brampton | ON | 2 | 3 | 13 | Yes | Yes | No | |
| 1975 | Poulin | Ottawa | ON | 3 | 4 | 5 | Yes | Yes | No | |
| 1958 | Young | Ear Falls | ON | 5 | 5 | 0 | No | Yes | No | |
| 1880 | Donnellys | Lucan Biddulph | ON | 5 | 5 | 0 | No | Yes | No | |
| 1832 | Sovereign | Norfolk County | ON | 8 | 8 | 0 | No | No | No | |
| 1829 | Easby | Perth | ON | 5 | 5 | 0 | No | No | No |