| Mario Gestri | |
| Birth Date: | 11 February 1924 |
| Birth Place: | Tizzana, Quarrata, Italy |
| Death Date: | 4 December 1953 (aged 29) |
| Death Place: | Montecatini Terme, Italy |
| Discipline: | Road |
| Role: | Rider |
| Proyears1: | 1950–1951 |
| Proteam1: | Bartali |
| Proyears2: | 1952 |
| Proyears3: | 1952 |
| Proteam3: | Tebag |
| Proyears4: | 1953 |
| Proteam4: | Arbos |
| Majorwins: | Grand Tours |
Mario Gestri (11 February 1924 – 4 December 1953) was an Italian road cyclist.
Gestri finished last at the 1950 Giro d'Italia, earning the Maglia nera and competed in three other editions of the race.[1] He continued racing into 1953, where he found moderate success.[2] He died in 1953 in a motorcycle accident.[3]