| Greshan Dananjaya | |
| Native Name: | Greshan Dananjaya |
| Nationality: | Sri Lankan |
| Citizenship: | Sri Lankan |
| Birth Date: | 7 June 1997 |
| Birth Place: | Sri Lanka |
| Country: | Sri Lanka |
| Sport: | Track and field |
| Event: | Triple jump |
| Turnedpro: | 2019 |
| Turnedpro Type: | International level |
| Pb: | 16.71 m (-0.5 m/s) Sri Lankan Record |
| Show-Medals: | yes |
Greshan Dananjaya is a Sri Lankan field athlete specializing in the Triple jump. He holds the current Sri Lankan record for the event with a jump of 16.71 m (-0.5 m/s) at the 2019 Sri Lankan National Trials in the Sugathadasa Stadium, Colombo.[1] This passing the 2016 South Asian Games record of (16.45 M) Renjith Maheshwary of India. He also holds Sri Lankan junior record in the long jump, with a jump of 7.83M.[2]
Dananjaya is a product of Joseph Vaz College, and represent the Sri Lanka Army Sports Club locally.[3]