The right to life is enshrined in Article 3 of the Universal Declaration of Human Rights.
The right is enshrined in Article 6 of the International Covenant on Civil and Political Rights:
1. Every human being has the inherent right to life. This right shall be protected by law. No one shall be arbitrarily deprived of his life.
2. In countries which have not abolished the death penalty, sentence of death may be imposed only for the most serious crimes in accordance with the law in force at the time of the commission of the crime and not contrary to the provisions of the present Covenant and to the Convention on the Prevention and Punishment of the Crime of Genocide. This penalty can only be carried out pursuant to a final judgement rendered by a competent court.
3. When deprivation of life constitutes the crime of genocide, it is understood that nothing in this article shall authorize any State Party to the present Covenant to derogate in any way from any obligation assumed under the provisions of the Convention on the Prevention and Punishment of the Crime of Genocide.
4. Anyone sentenced to death shall have the right to seek pardon or commutation of the sentence. Amnesty, pardon or commutation of the sentence of death may be granted in all cases.
5. Sentence of death shall not be imposed for crimes committed by persons below eighteen years of age and shall not be carried out on pregnant women.
6. Nothing in this article shall be invoked to delay or to prevent the abolition of capital punishment by any State Party to the present Covenant.
The Convention on the Rights of the Child contains this right in Article 6:
1. States Parties recognize that every child has the inherent right to life.
2. States Parties shall ensure to the maximum extent possible the survival and development of the child.
It is also contained in Article 11 of the International Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families:
1. No migrant worker or member of his or her family shall be held in slavery or servitude.
2. No migrant worker or member of his or her family shall be required to perform forced or compulsory labour.
3. Paragraph 2 of the present article shall not be held to preclude, in States where imprisonment with hard labour may be imposed as a punishment for a crime, the performance of hard labour in pursuance of a sentence to such punishment by a competent court.
4. For the purpose of the present article the term "forced or compulsory labour" shall not include:
(a) Any work or service not referred to in paragraph 3 of the present article normally required of a person who is under detention in consequence of a lawful order of a court or of a person during conditional release from such detention;
(b) Any service exacted in cases of emergency or clamity threatening the life or well-being of the community;
(c) Any work or service that forms part of normal civil obligations so far as it is imposed also on citizens of the State concerned.
The Convention on the Rights of Persons with Disabilities contains this right in Article 10:
States Parties reaffirm that every human being has the inherent right to life and shall take all necessary measures to ensure its effective enjoyment by persons with disabilities on an equal basis with others.
The right is also contained in Article 4 of the African Charter on Human and Peoples' Rights:
Human beings are inviolable. Every human being shall be entitled to respect for his life and the integrity of his person. No one may be arbitrarily deprived of this right.