A murder–suicide is an act where an individual intentionally kills one or more people before or while killing themselves. The combination of murder and suicide can take various forms:Suicide after or during murder inflicted on others Murder that entails suicide, such as suicide bombing or the deliberate crash of a vehicle carrying the perpetrator and others Murder of an officer or bystander during the act of suicide by cop Suicide after murder to escape criminal punishment(s) Suicide after murder as a form of self-punishment due to guilt Suicide before or after murder by proxy Murder linked with a person with suicidal ideation Joint suicide in the form of killing the other with consent, and then killing oneself Suicide by pilot

A suicide attack is a deliberate attack in which the perpetrators knowingly sacrifice their own lives as part of the attack. These attacks are often associated with terrorism or military conflicts and are considered a form of murder–suicide. Suicide attacks involving explosives are commonly referred to as suicide bombings. In the context of terrorism, they are also commonly referred to as suicide terrorism. While generally not inherently regulated under international law, suicide attacks in their execution often violate international laws of war, such as prohibitions against perfidy or targeting civilians.