Part III — Fundamental Rights

Article 21 — Right to Life and Personal Liberty

Article 21 is the most expansively interpreted provision in the Constitution. Originally read narrowly as protecting life and liberty against arbitrary state action, the Supreme Court has expanded it to include the right to privacy, dignity, livelihood, health, environment, and speedy trial — among dozens of other implied rights.

Timeline

24 August 2017

Supreme Court: Right to Privacy is a fundamental right

A nine-judge bench unanimously held in Justice K.S. Puttaswamy v. Union of India that the right to privacy is a fundamental right under Article 21. The judgment laid the groundwork for the Personal Data Protection framework and directly challenged the Aadhaar project's data collection practices.

Justice K.S. Puttaswamy v. Union of India, (2017) 10 SCC 1

25 January 1978

Maneka Gandhi case: Article 21 expanded

The Supreme Court's judgment in Maneka Gandhi v. Union of India transformed Article 21. The court held that the procedure depriving a person of life or liberty must be fair, just, and reasonable — not merely a procedure enacted by law. This laid the foundation for the right to privacy, the right to livelihood, and dozens of subsequent expansions.

Maneka Gandhi v. Union of India, AIR 1978 SC 597

26 November 1949

Constitution of India adopted

The Constituent Assembly adopted the Constitution of India, drafted under the chairmanship of Dr B.R. Ambedkar. It came into force on 26 January 1950. The Constitution established India as a sovereign democratic republic.

Constitution of India, Preamble

Constitutional text

No person shall be deprived of his life or personal liberty except according to procedure established by law.

Source: Constitution of India, as published by the Ministry of Law and Justice.

History and context

The Constituent Assembly chose 'procedure established by law' over the American 'due process of law' to avoid judicial overreach. This proved consequential: in A. K. Gopalan v. State of Madras (1950), the Supreme Court held that 'procedure established by law' meant any procedure Parliament chose — drastically limiting Article 21. The transformation came in Maneka Gandhi v. Union of India (1978), where a seven-judge bench held that the procedure must be fair, just, and reasonable, effectively importing substantive due process. Subsequent decades saw the Court derive the right to privacy (K. S. Puttaswamy, 2017), the right to livelihood (Olga Tellis, 1985), the right to health, the right to a clean environment, the right to legal aid, and protection against custodial violence from Article 21.

Key Supreme Court cases

A. K. Gopalan v. State of Madras (1950)

Narrow reading: 'procedure established by law' meant any statutory procedure; each fundamental right read in isolation.

Maneka Gandhi v. Union of India (1978)

Overruled Gopalan; held procedure must be fair and reasonable; fused Articles 14, 19, and 21.

Olga Tellis v. Bombay Municipal Corporation (1985)

Right to livelihood is part of right to life; pavement dwellers cannot be evicted without notice.

K. S. Puttaswamy v. Union of India (2017)

Nine-judge bench unanimously held that the right to privacy is a fundamental right protected under Article 21.

Last reviewed: 1 June 2026

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