| Darwin Piñeyrúa | |
| Sport: | Athletics |
| Event: | Hammer throw |
| Birth Date: | 23 December 1945 |
| Birth Place: | Montevideo, Uruguay |
Darwin Piñeyrúa (23 December 1945 - 11 February 1978) was a Uruguayan athlete. He competed in the men's hammer throw at the 1972 Summer Olympics.[1] He was the flag bearer for Uruguay in the opening ceremony.[2]
The main track and field venue in Uruguay, the Pista de Atletismo Darwin Piñeyrúa, is named in his honour.