Ratnasiri Wickremanayake, Sri Lankan politician (b. 1933)

Ratnasiri Wickremanayake (Sinhala: රත්නසිරි වික්‍රමනායක, Tamil: ரத்னசிறி விக்கிரமநாயக்க; 5 May 1933 – 27 December 2016) was a Sri Lankan politician who was Prime Minister of Sri Lanka from 2000 to 2001 and again from 2005 to 2010. He was a Member of Parliament representing Horana electorate and later Kalutara District.

Wickremanayake held many ministerial positions in the Sri Lankan government, beginning in 1970.