Edirimuni Dinuka Nishan Perera Karunaratne ( Sinhala : දිනුක කරුණාරත්න; Tamil : தினுக கருணாரத்ன ) (born October 6, 1987 in Galle ) is a badminton player from Sri Lanka .
Dinuka Karunaratne won bronze at the South Asian Games in the men's singles in 2006. In 2007 he won the men's doubles at Jordan International with his brother Diluka Karunaratne as well as in 2008 at Uganda International.