Sinnappah Arasaratnam FAHA (20 March 1930 – 4 October 1998) was a Sri Lankan academic, historian and author, born during British colonial rule.

[2] After school he joined the University of Ceylon in 1947 from where he graduated in 1951 with a First Class Honours BA degree.

[2] Arasaratnam was a practising Christian who attended the Uniting Church in Armidale, New South Wales.

[1][2] Arasaratnam was appointed second professor in the Department of History at the University of New England (Australia) in 1972.

[1][4] His literary works were achieved while heavily engaged with activities such as sitting on key bodies such as the Academic Advisory Committee.