The
top 10 landmark judgments of the Supreme Court of India most relevant for UPSC
preparation focus on constitutional doctrines, fundamental rights, and
governance principles frequently tested in Prelims and Mains.
Essential
Cases List
s Kesavananda
Bharati v. State of Kerala (1973): Introduced the basic structure doctrine,
limiting Parliament's amendment powers under Article 368.
s Maneka Gandhi
v. Union of India (1978): Expanded Article 21 to require "right, just, and
fair" procedures, linking Articles 14, 19, and 21 as the golden triangle.
s Minerva Mills
v. Union of India (1980): Reinforced basic structure by striking down parts of
the 42nd Amendment that prioritized Directive Principles over fundamental
rights.
s Waman Rao v.
Union of India (1981): Clarified basic structure's prospective application.
s Indra Sawhney
v. Union of India (1992): Upheld 27% OBC reservation but capped total at 50%
and excluded creamy layer.
s S.R. Bommai v.
Union of India (1994): Limited Article 356 misuse, making President's Rule
justiciable and promoting federalism.
s Vishakha v.
State of Rajasthan (1997): Established guidelines against workplace sexual
harassment, later codified as POSH Act.
s Shreya Singhal
v. Union of India (2015): Struck down Section 66A of IT Act as vague,
protecting online free speech under Article 19.
s K.S. Puttaswamy
v. Union of India (2017): Declared right to privacy a fundamental right under
Articles 14, 19, and 21.
s Navtej Singh
Johar v. Union of India (2018): Decriminalized consensual same-sex relations by
reading down Section 377 IPC.
UPSC
Relevance
These
cases underpin polity questions on judicial review, federalism, reservations,
and rights expansion, often appearing in MCQs or essays.




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