| Alessandro Mastalli | |
| Birth Date: | 7 February 1996 |
| Birth Place: | Bologna, Italy |
| Height: | 1.75 m |
| Position: | Midfielder |
| Currentclub: | Siena |
| Clubnumber: | 24 |
| Youthclubs1: | AC Milan |
| Years1: | 2014–2015 |
| Clubs1: | AC Milan |
| Caps1: | 1 |
| Goals1: | 0 |
| Years2: | 2015–2016 |
| Clubs2: | → Lugano (loan) |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2016–2021 |
| Clubs3: | Juve Stabia |
| Caps3: | 118 |
| Goals3: | 13 |
| Years4: | 2021–2022 |
| Clubs4: | Avellino |
| Caps4: | 19 |
| Goals4: | 1 |
| Years5: | 2022–2023 |
| Clubs5: | Lucchese |
| Caps5: | 36 |
| Goals5: | 4 |
| Years6: | 2023–2024 |
| Clubs6: | Alessandria |
| Caps6: | 37 |
| Goals6: | 4 |
| Years7: | 2024– |
| Clubs7: | Siena |
| Caps7: | 12 |
| Goals7: | 1 |
| Nationalyears1: | 2011 |
| Nationalteam1: | Italy U16 |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 2014 |
| Nationalteam2: | Italy U18 |
| Nationalcaps2: | 2 |
| Nationalgoals2: | 1 |
| Nationalyears3: | 2014 |
| Nationalteam3: | Italy U19 |
| Nationalcaps3: | 3 |
| Nationalgoals3: | 0 |
| Pcupdate: | 17 November 2024 |
| Ntupdate: | 9 September 2014 |
Alessandro Mastalli (born 7 February 1996) is an Italian professional footballer who plays as a midfielder for Serie D club Siena.
Mastalli is a youth exponent from AC Milan. He made his Serie A debut at 24 May 2015 against Torino F.C. He replaced Andrea Poli after 76 minutes in a 3–0 home win.[1]
At the start of the 2015–16 season, he moved to Swiss club Lugano on a one-year loan deal, but he moved back to Milan in January 2016.[2]
On 14 July 2021, he signed a two-year contract with Avellino.[3]
On 16 August 2022, Mastalli joined Lucchese.[4]
On 1 September 2023, Mastalli signed a two-year contract with Alessandria.[5]