Bandaranaike or Bandaranayake is a Sinhalese surname. Notable people with the surname include:
Anura Bandaranaike (1949–2008), Sri Lankan politicianChandrika Bandaranaike Kumaratunga (born 1945), Sri Lankan politicianDharmasiri Bandaranayake (born 1949), Sri Lankan film director and playwrightFelix Dias Bandaranaike (1930–1985), Ceylonese politicianFelix Reginald Dias Bandaranaike I (1861–1947), Ceylonese lawyer and judgeFelix Reginald Dias Bandaranaike II (1891–1951), Ceylonese lawyer and judgeHarry Dias Bandaranaike (1822–1901), Ceylonese lawyer and judgeIndika Bandaranayake (born 1972), Sri Lankan politicianNalin Bandaranayake, Sri Lankan cricketerPandu Bandaranaike (born 1962), Sri Lankan politicianS. W. R. D. Bandaranaike (1899–1959), Ceylonese politicianShirani Bandaranayake (born 1958), Sri Lankan academic and judgeSirimavo Bandaranaike (1916–2000), Sri Lankan politicianSolomon Dias Bandaranaike (1862–1946), Ceylonese headmenSunethra Bandaranaike, Sri Lankan philanthropist and socialite