The Shedden massacre involved the gang-related killing of eight men, whose bodies were found in a field five kilometres north of Shedden, a small village in the Canadian province of Ontario, on April 8, 2006. Four vehicles, with the bodies inside, were first discovered by a farmer. The day after the bodies were discovered, five people, including one member of the Bandidos motorcycle gang, were arrested for the murders, and three more people were arrested in June 2006. The Ontario Provincial Police (OPP) said the killings were an isolated event and there were no fears for the safety of local residents. The name Shedden massacre is a misnomer. The killings took place at a farm outside of Iona Station and Shedden was the hamlet closest to where the bodies were discovered in a farmer's field.

The Bandidos Motorcycle Club, also known as the Bandido Nation, is an outlaw motorcycle club with a worldwide membership. Formed in San Leon, Texas, in 1966, the Bandidos MC is estimated to have between 2,000 and 2,500 members and 303 chapters located in 22 countries, making it the second-largest motorcycle club in the world behind the Hells Angels.