Sri Lanka

http://www.lk/Government.html

http://www.lk/

http://www.lanka.net/fm/

http://www.embassy.srilanka.at/

The precolonial and colonial history of Sri Lanka is not yet mentioned.
Independent Monarchy in the British Commonwealth as "Ceylon" 04.02.1948, Republic of Sri Lanka 22.05.1972

(King/Queen) 
George VI (1895-1952) 04.02.1948-06.02.1952
Elisabeth II (1926) 06.02.1952-22.05.1972

(Governors-general)
  Sir Henry Monck-Mason Moore (1887-1964) 04.02.1948-06.07.1949
  Herwald Ramsbotham, Baron Soulbury (1887-1971) 06.07.1949-17.07.1954
  Sir Oliver Ernest Goonetilleke (1892-1978) 17.07.1954-02.03.1962
William Gopallawa (1897-1981) 02.03.1962-22.05.1972

(Presidents)
William Gopallawa (1897-1981) 22.05.1972-04.02.1978
Junius Richard Jayawardene (1906) 04.02.1978-02.01.1989
Ranasinghe Premadesa (1924-1993) 02.02.1989-01.05.1993
Dingiri Banda Wijetunge (1922) 01.05.1993-12.11.1994
Chandrika Bandaraneike Kumaratunga (1945) 12.11.1994-
   

 (Prime Ministers)
Don Stephen Senanayake (1911-1973) 04.02.1948-22.03.1952
Dudley Senanayake (1911-1973) 26.03.1952-07.10.1953
John Kotelawala (1897-1980) 12.10.1953-11.04.1956
Solomon Bandaranaike (1899-1959) 12.04.1956-26.09.1959
Wijayananda Dahanayake (1902-1997) 26.09.1959-20.03.1960
Dudley Senanayake (2nd time) 21.03.1960-21.07.1960
Sirimavo Bandaranaike (1916-2000) 21.07.1960-25.03.1965
Dudley Senanayake (3rd time) 25.03.1965-28.05.1970
Sirimavo Bandaranaike (2nd time) 31.05.1970-23.07.1977
Junius Richard Jayawardene (1906) 23.07.1977-04.02.1978
Ranasinghe Premadasa (1924) 04.02.1978-02.02.1989
Dingiri Banda Wijetunge (1922) 15.02.1989-07.05.1993
Ranil Wickremasinghe (1949) 07.05.1993-19.08.1994
Chandrika Bandaraneike Kumaratunga (1945) 19.08.1994-12.11.1994
Sirimavo Bandaranaike (3rd time) 14.11.1994-10.08.2000
Ratnasiri Wickramanayaka (1933) 10.08.2000-07.12.2001
Ranil Wickremasinghe (2nd time) 09.12.2001-05.04.2004
Mahinda Rajapakse (1945) 05.04.2004-