Complex behaviors arising from the sleep period may result in violent or injurious consequences, even death. Those resulting in death may be erroneously deemed suicides. A series of case examples and review of the pertinent literature are provided to increase awareness of the possibility that some apparent "suicides" are the unfortunate, but unintentional, consequence of sleep-related complex behaviors and therefore are without premeditation, conscious awareness, or personal responsibility. The correct cause-of-death determination in such cases may have profound social, religious, and insurance implications for surviving friends and family members.