| João Vieira | |
| Full Name: | João do Carmo Rodrigues Vieira |
| Nationality: | Portuguese |
| Sport: | Athletics |
| Event: | Triple jump |
| Birth Date: | 6 March 1919 |
| Birth Place: | Lisbon, Portugal |
João Vieira (born 6 March 1919) was a Portuguese athlete. He competed in the men's triple jump at the 1948 Summer Olympics.[1]