| Sergio Castelletti | |
| Fullname: | Sergio Castelletti |
| Birth Date: | 30 December 1937 |
| Death Place: | Florence, Italy |
| Youthyears1: | 1955 |
| Years1: | 1956–1958 |
| Caps1: | 1 |
| Goals1: | 0 |
| Years2: | 1958–1959 |
| Caps2: | 34 |
| Goals2: | 0 |
| Years3: | 1959–1966 |
| Caps3: | 214 |
| Goals3: | 0 |
| Years4: | 1966–1968 |
| Caps4: | 26 |
| Goals4: | 0 |
| Years5: | 1968–1969 |
| Caps5: | 37 |
| Goals5: | 0 |
| Years6: | 1969–1971 |
| Caps6: | 64 |
| Goals6: | 0 |
| Nationalyears1: | 1960 |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 1959 |
| Nationalcaps2: | 2 |
| Nationalgoals2: | 0 |
| Nationalyears3: | 1958–1962 |
| Nationalcaps3: | 7 |
| Nationalgoals3: | 0 |
| Manageryears1: | 1971–1972 |
| Manageryears2: | 1972–1974 |
| Manageryears3: | 1974–1975 |
| Manageryears4: | 1975–1976 |
| Manageryears5: | 1977–1979 |
| Manageryears6: | 1991–1992 |
| Pcupdate: | 1 March 2010 |
Sergio Castelletti (pronounced as /it/; 30 December 1937 – 28 November 2004) was an Italian professional footballer and manager, who played as a defender.
As a footballer, he played several seasons with Fiorentina, winning twice Coppa Italia (1961, 1966), a UEFA Cup Winners' Cup (1961) and a Mitropa Cup (1966).[1]
Along with his team-mate Enzo Robotti, who also came from the province of Alessandria like Castelletti himself, he formed a strong full-back pairing, which sometimes even lined up with the Italy national football team.[2]
After the end of his playing career, Castelletti trained Fiorentina youth team, some clubs in Serie B and in lower divisions.[3]
He died in 2004.[4]