| César de Diego | |
| Birth Date: | 18 June 1924 |
| Birth Place: | Oviedo, Spain |
| Death Date: | July 2015 (aged 91) |
| Sport: | Fencing |
| Show-Medals: | yes |
César de Diego (18 June 1924 - July 2015) was a Spanish fencer. He competed in the individual and team sabre events at the 1960 Summer Olympics.[1] He also competed at the 1959 Mediterranean Games where he won a silver medal in the team sabre event