The right to die is a concept based on the opinion that human beings are entitled to end their life or undergo voluntary euthanasia. Possession of the right to die is often bestowed with the understanding that a person with a terminal illness, incurable pain, or without the will to continue living should be allowed to end their own life, use assisted suicide, or decline life-prolonging treatment. The question of who, if anyone, may be empowered to make this decision is often the subject of debate.

Assisted suicide – sometimes referred to as medical aid in dying – means a procedure in which people take medications to end their own lives with the help of others, usually medical professionals. The term usually refers to physician-assisted suicide (PAS), which is an end of life measure for a person suffering a painful, terminal illness. Once it is determined that the person's situation qualifies under the physician-assisted suicide laws for that location, the physician's assistance is usually limited to writing a prescription for a lethal dose of drugs.