| Alejandro Diz | |
| Nationality: | Argentine |
| Height: | 1.96 m |
| Position: | Outside hitter |
| Teamnumber: | 6 (1984) 4 (1988) |
| Nationalyears: | 1983–1988 |
| Show-Medals: | yes |
Alejandro Diz (born March 26, 1965) is a former volleyball player from Argentina who represented his native country in two Summer Olympics. After having finished in sixth place at the 1984 Summer Olympics in Los Angeles, he was a member of the men's national team four years later in the 1988 Summer Olympics in Seoul, winning the bronze medal.