Rajapaksa or Rajapakse is a Sinhalese surname. Notable people with the surname include:
Basil Rajapaksa, Sri Lankan politicianBhanuka Rajapaksa (born 1991), Sri Lankan cricketerChamal Rajapaksa (born 1942), Sri Lankan politicianD. A. Rajapaksa (1905–1967), Ceylonese politicianD. M. Rajapaksa, Ceylonese politicianDayan Rajapakse (born 1972), Sri Lankan physicianGeorge Rajapaksa (born 1926), Ceylonese politicianGotabhaya Rajapaksa (born 1949), Sri Lankan army officerLakshman Rajapaksa (born 1905), Ceylonese politicianLalitha Rajapakse (1900–1976), Ceylonese lawyer and politicianMahinda Rajapaksa (born 1945), Sri Lankan politicianMorris Rajapaksa (died 1995), Sri Lankan politicianNamal Rajapaksa (born 1986), Sri Lankan politicianNimal Rajapakshe, Canadian academicNirupama Rajapaksa (born 1962), Sri Lankan politicianShasheendra Rajapaksa, Sri Lankan politicianShiranthi Rajapaksa, Sri Lankan former first ladyShyamlal Rajapaksa (1966–2009), Sri Lankan lawyerSomaratne Rajapakse, Sri Lankan soldierSuranimala Rajapaksha (born 1949), Sri Lankan politicianWijeyadasa Rajapakshe (born 1959), Sri Lankan lawyer and politician