| Viviana Chávez | |
| Birth Date: | 28 May 1987 |
| Birth Place: | San Juan, Argentina |
| Height: | 164 cm |
| Weight: | 52 kg |
| Sport: | Track and field |
| Event: | Marathon |
| Pb: | 2:38:27 (2016) |
| Club: | FILA |
| Coach: | Dario Nunez |
Viviana Chávez (born 28 May 1987) is an Argentinean marathon runner. She finished 125th at the 2016 Olympics. She took up long-distance running in 2010.