Dinuka Hettiarachchi (born 15 July 1976) is a former Sri Lankan Test cricketer. He is a right-handed batsman and a slow left-arm bowler. Though he not played in international cricket since 2001, he is an active member in Sri Lanka domestic seasons. In 234 first-class matches, Hettiarachchi took exactly 1,000 wickets, the third Sri Lankan after Muttiah Muralitharan and Rangana Herath to achieve the landmark.