Sirima Ratwatte Dias Bandaranaike (Sinhala: සිරිමා රත්වත්තේ ඩයස් බණ්ඩාරනායක; Tamil: சிறிமா ரத்வத்தே டயஸ் பண்டாரநாயக்கே; 17 April 1916 – 10 October 2000), commonly known as Sirimavo Bandaranaike (මැතිනිය), was a Sri Lankan politician. She was the world's first female prime minister when she became Prime Minister of Sri Lanka (then the Dominion of Ceylon) in 1960. She chaired the Sri Lanka Freedom Party from 1960 to 1994 and served three terms as prime minister, two times as the chief executive, 1960 to 1965 and 1970 to 1977, and once again in a presidential system from 1994 to 2000, governing under the presidency of her daughter Chandrika Kumaratunga.