Edirimuni Dinuka Nishan Perera Karunaratne (Sinhala: දිනුක කරුණාරත්න; Tamil: தினுக கருணாரத்ன; born 6 October 1987) is a Sri Lankan badminton player.

[7][8] In 2010, he became the champion of the Sri Lankan National Badminton Championships in men's singles event after defeated his teammate Eranga Fernando.

[13] In 2013, he won the Uganda International tournament in men's singles event beat Subhankar Dey of India 21-16, 21-17 in a game that lasted 34 minutes.

[18] He also competed in the men's singles and mixed team events at the Commonwealth Games in Glasgow, Scotland, and defeated by Daren Liew of Malaysia 21-19, 21-12 in round of 16.

[19] In 2016, he became the champion in the men's doubles event at the Uganda International tournament partnered with Niluka, after beat the Egyptian paired Ali Ahmed El Khateeb and Abdelrahman Kashkal 21-17, 21-17.