Solomon West Ridgeway Dias Bandaranaiek (Sinhala: සොලමන් වෙස්ට් රිජ්වේ ඩයස් බණ්ඩාරනායක, Tamil: சாலமன் வெஸ்ட் ரிச்சர்ட் டயஸ் பண்டாரநாயக்கா; 8 January 1899 – 26 September 1959) commonly known as S. W. R. D. Bandaranaike, was the fourth Prime Minister of Ceylon (now Sri Lanka). He was killed (assassinated) by a Buddhist monk named Talduwe Somarama.