Sri Lankan Constitution of 1972

The Sri Lankan Constitution of 1972 is the constitution of Sri Lanka. It is Sri Lanka's first republican constitution, and its second constitution since the independence of the country in 1948. The constitution changed the country's name to Sri Lanka from Ceylon, and proclaimed it as an independent republic nation. Therefore, the official name of the country was "Republic of Sri Lanka" and the constitution was known as "1972 Republican Constitution". The new constitution was promulgated on 22 May 1972.

The arrival of the Portuguese in 1505 and their interest in the island dramatically changed the political landscape. The island had been ruled by seven kingdoms, and the Kingdom of Kotte was firstly occupied by the Portuguese. Another foreign influence was the Dutch from 1640 until 1796, when the British came along. Unlike the Portuguese and Dutch, the British occupied the entire island and as a Crown colony and was known as British Ceylon from 1815 until 1948.

Ceylon had been introduced to various legislative systems including the idea of a constitution. The Soulbury Constitution was the first constitution as an independent nation. Ceylon gained independence on 4 February 1948, while the Monarchy of the United Kingdom remained as Head of State. Executive power was nominally vested in the Sovereign of Ceylon. Governance of Ceylon came from the parliament, which was not completely independent. Several weaknesses of the 1947 Soulbury Constitution demanded a new constitution.

United Front, led by the Sri Lanka Freedom Party of Sirimavo Bandaranaike won the 1970 general election with a two third majority and Bandaranaike became the Prime Minister. She convened a group to draft the new constitution, which was promulgated on 22 May 1972.

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