Sri Lanka: Heads of State: 1948-1972

All Heads of State in the following index are also Heads of State in the United Kingdom of Great Britain and Northern Ireland, and other realms and territories.
By the Grace of God, of Great Britain, Ireland and the British Dominions beyond the Seas King, Defender of the Faith, Emperor of India
4 Feb 1948 - 22 Jun 1948	George VI
By the Grace of God, of Great Britain, Ireland and the British Dominions beyond the Seas King, Defender of the Faith
22 Jun 1948 - 6 Feb 1952	George VI
By the Grace of God, of Great Britain, Ireland and the British Dominions beyond the Seas Queen, Defender of the Faith
6 Feb 1952 - 4 Jun 1953	Elizabeth II
Queen of Ceylon and of Her other Realms and Territories, Head of the Commonwealth [1][2]
4 Jun 1953 - 22 May 1972	Elizabeth II

The adoption of the style and titles was authorized by the Royal Titles Act, No. 22 of 1953, passed by the Parliament of Ceylon. The change was effected by a proclamation issued by command of the Queen on 28 May 1953 (effective on publication in Ceylon Government Gazette, Extra, No. 10,534, 4 Jun 1953, p. 867).
In official non-statutory use (Sinhala): Laṃkāve hā Svakīya Vĕnat Vijitayanhi hā Yaṭat Pradeśayanhi Mahā Ræjina, Pŏdu Rājya Maṇḍalaye Adhipatiṇiya (ලංකාවේ හා ස්වකීය වෙනත් විජිතයන්හි හා යටත් ප්‍රදේශයන්හි මහා රැජින, පොදු රාජ්‍ය මණ්ඩලයේ අධිපතිණිය).