Amanda Michelle Todd (November 27, 1996 – October 10, 2012) was a 15-year-old Canadian student and victim of cyberbullying who hanged herself at her home in Port Coquitlam, British Columbia. Before her death, Todd posted a video on YouTube in which she used a series of flashcards to tell her experience of being blackmailed into exposing her breasts via webcam, and of being bullied and physically assaulted. The video went viral after her death, resulting in international media attention. The video has had 15 million views as of January 2023. The Royal Canadian Mounted Police and British Columbia Coroners Service launched investigations into the suicide.

In response to her death, Christy Clark, then Premier of British Columbia, made an online statement of condolence and suggested a national discussion on criminalizing cyberbullying. Also, a motion was introduced in the Canadian House of Commons to propose a study of the scope of bullying in Canada and for more funding and support for anti-bullying organizations. Todd's mother, Carol, established the Amanda Todd Trust, receiving donations to support anti-bullying awareness education and programs for young people with mental health problems.

A Dutch-Turkish man, Aydin Coban, who was already imprisoned for sexual blackmail in the Netherlands, was extradited to Canada to face trial on charges of harassing and sexually extorting Todd before her suicide. On August 5, 2022 the jury found Coban guilty on all counts, and he was sentenced to 13 years in prison on October 14, 2022.