Don Alwin Rajapaksa (Sinhala:දොන් අල්වින් රාජපක්ෂ) (5 November 1905 - 7 November 1967) (known as D. A. Rajapaksa) was a Sri Lankan politician and Member of Parliament, who represented the Beliatta electorate in Hambantota district from 1947 to 1965. A founding member of Sri Lanka Freedom Party and Cabinet Minister of Agriculture and Land in Wijeyananda Dahanayake's government, he was the father of the current Sri Lankan President Dr Mahinda Rajapaksa.