| Giovanni Reggio | |
| Full Name: | Giovanni Leone Raffaele Valerico Reggio |
| Nationality: | Italian |
| Birth Date: | 1888 12, df=yes |
| Club: | Lega Italiana Navale Genova |
| Medaltemplates-Title: | Competition record |
| Medaltemplates: | |
| Show-Medals: | yes |
| Updated: | 18 March 2015 |
Giovanni Leone Reggio (12 December 1888 – 22 December 1971) was an Italian sailor who competed in the 1928 Summer Olympics, 1936 Summer Olympics, and 1948 Summer Olympics. In 1928 he finished seventh as a crew member of the Italian boat Twins II in the 6 metre class event. Eight years later he was a crew member of the Italian boat Italia which won the gold medal in the 8 metre class competition. In 1948 he finished eighth as a crew member of the Italian boat Ciocca II in the 6 metre class event.