Ratnasiri Wickremanayake, Sri Lankan politician (born 1933)

Ratnasiri Wickremanayake was a Sri Lankan politician who served as Prime Minister of Sri Lanka from 2000 to 2001 and again from 2005 to 2010, and also served as the Leader of the Opposition from 2001 to 2002. He was a Member of Parliament representing the Horana electorate and later the Kalutara District.