| Full name | Gianfranco Leoncini |
| Nation | Italy |
| Date of birth | 09/25/1939 |
| Place of birth | Rome - Italy |
| Date of death | 04/05/2019 |
| Place of death | Chivasso (Turin) - Italy |
| Role | Midfielder |
| First official match | SerA: 04/12/1959 LR Vicenza - Juventus 1 - 0 |
| Last official match | SerA: 04/12/1970 Lazio - Juventus 2 - 0 |
| Last match overall | Amic: 05/28/1970 Crema - Juventus 1 - 1 |
| Overall Appearances | 384 |
| Goals Scored | 25 |
| First Match | 06/16/1966 Italy - USSR 0-1 |
| Appearances | 2 (Juventus period: 2) |
| Goals Scored | 0 (Juventus period: 0) |
