| Birth Place: | Rome, Italy |
| Sport: | Cycling |
| Event: | Track |
| Show-Medals: | yes |
Mario Gentili (born 5 March 1962) is a retired Italian amateur cyclist. He won the world title in motor-paced racing in 1986 and 1987, after placing third in 1985. In 1987 he also won one stage of Cinturón a Mallorca, and finished third overall.