| Mattia De Marchi | |
| Fullname: | Mattia De Marchi |
| Birth Place: | Mirano, Italy |
| Role: | Rider |
| Amateuryears1: | 2007 |
| Amateurteam1: | S.C. Calzaturificio Donna Carolina |
| Amateuryears2: | 2008–2009 |
| Amateurteam2: | Team La Torre |
| Amateuryears3: | 2011–2014 |
| Amateurteam3: | U.S. Fausto Coppi Gazzera–Videa |
| Amateuryears4: | 2015–2016 |
| Proyears1: | 2016 |
| Proyears2: | 2017 |
Mattia De Marchi (born 3 June 1991 in Mirano) is an Italian former professional road cyclist and current gravel racer.[1]