| Gianmarco Buttazzo | |
| Nationality: | Italian |
| Sport: | Athletics |
| Event: | Long-distance running |
| Club: | G.S. Esercito |
| Birth Date: | 23 August 1977 |
| Birth Place: | San Cesario di Lecce |
| Height: | 1.72 m |
| Weight: | 59 kg |
| Country: |  Italy |
Giammarco Buttazzo (born 23 August 1977) is an Italian male long-distance runner who won one national championship.[1]
He competed at two editions of the IAAF World Cross Country Championships (2006, 2008),[2] two of the IAAF World Half Marathon Championships and four editions of the European Cross Country Championships (2006, 2014), winning a medal with the national team in 2009.