Thirty-nine bodies are found in the Heaven's Gate mass suicides.

Heaven's Gate was an American new religious movement known primarily for the mass suicides committed by its members in 1997. Commonly designated as a cult, it was founded in 1974 and led by Marshall Applewhite (1931–1997) and Bonnie Nettles (1927–1985), known within the movement as Do and Ti. Nettles and Applewhite first met in 1972 and went on a journey of spiritual discovery, identifying themselves as the two witnesses of the Book of Revelation, attracting a following of several hundred people in the mid-1970s. In 1976, a core group of a few dozen members stopped recruiting and instituted a monastic lifestyle.

Mass suicide is a form of suicide, occurring when a group of people simultaneously kill themselves. Mass suicide sometimes occurs in religious settings. In war, defeated groups may resort to mass suicide rather than being captured. Suicide pacts are a form of mass suicide that are sometimes planned or carried out by small groups of depressed or hopeless people. Mass suicides have been used as a form of political protest.