| Dharmasiri Weerakoon | |
| Nationality: | Sri Lankan |
| Sport: | Boxing |
| Birth Date: | 28 September 1938 |
| Birth Place: | Colombo, Ceylon |
| Death Place: | Beruwala, Sri Lanka |
Dharmasiri Weerakoon (28 September 1938 - 31 may 1998) was a Sri Lankan boxer. He held the National Champion title in Sri Lanka from 1956 to 1959. He was also the Asian champion in his weight category and represented Sri Lanka (Ceylon) in the 1960 Rome Summer Olympics. He competed in the men's welterweight event at the 1960 Summer Olympics.[1] At the 1960 Summer Olympics, he lost on points to Des Duguid of Australia.