Alexandre Bissonnette, born on December 1, 1989, is a Canadian man infamous for perpetrating the Quebec City mosque shooting on January 29, 2017, at the Islamic Cultural Centre of Quebec City. As a student at Université Laval studying political science and anthropology, Bissonnette opened fire during evening prayers, killing six worshippers—Azzeddine Soufiane, Abdelkrim Hassane, Aboubaker Thabti, Ibrahima Barry, Mamadou Tanou Barry, and Khaled Belkacemi—and injuring five others. He was arrested shortly after calling police to surrender from near the Île d'Orléans Bridge. The attack was motivated by far-right extremism and Islamophobia, with Bissonnette reportedly influenced by alt-right figures and online rhetoric, including admiration for Donald Trump and possibly Ben Shapiro. He had a history of expressing anti-immigrant and anti-feminist views on social media.

Bissonnette grew up in Quebec City, sharing a close relationship with his family, including a twin brother with whom he lived in an apartment about six kilometers from their parents' home. He occasionally stayed with his parents on weekends and went shooting at a range with his father, Raymond Bissonnette. A former Canadian Army cadet, he had no prior criminal record but was known to peers as socially awkward and increasingly radicalized online. In March 2018, he pleaded guilty to six counts of first-degree murder and six counts of attempted murder, receiving a life sentence with no parole eligibility for 40 years. The incident heightened discussions on gun control, Islamophobia, and online radicalization in Canada.

Post-conviction, Bissonnette has remained incarcerated, with limited public information on his personal life beyond the shooting. He has been criticized and condemned internationally for the terrorist act, which was classified as such by authorities. Allegations of his exposure to far-right influences, including investigations into his online activities, underscore broader networks of extremism.