Koshan Danuska (born 4 March 1993) is a Sri Lankan cricketer. He made his Twenty20 debut on 5 January 2016, for Ragama Cricket Club in the 2015âÂÂ16 AIA Premier T20 Tournament. In August 2021, he was named in the SLC Greys team for the 2021 SLC Invitational T20 League tournament. However, prior to the first match, he failed a fitness test.