| Position: | Point guard |
| Height Ft: | 5 |
| Height In: | 11 |
| League: | Lebanese Basketball League |
| Team: | Beirut Club |
| Number: | 25 |
| Nationality: | Lebanese |
| Birth Date: | 22 March 1994 |
| Birth Place: | Beirut, Lebanon |
| Career Start: | 2013 |
| Years1: | 2013–2017 |
| Team1: | Hoops Club |
| Years2: | 2017–2018 |
| Team2: | Sagesse SC |
| Years3: | 2018–2019 |
| Team3: | Champville SC |
| Years4: | 2020–2023 |
| Team4: | Sagesse SC |
| Team5: | Beirut Club |
| Years5: | 2023-present |
Ali Mezher (born 22 March 1994 in Beirut) is a professional Lebanese professional basketball who plays for Beirut Club (basketball) in the Lebanese Basketball League.
In the 2016–2017 season, Ali played for Hoops Club and averaged 17.9 ppg, 8.1 assists, 4.4 rebounds, and 1.6 steals, then signed a contract with Sagesse Club for the 2017–2018 season. He joined Champville SC the following summer, but returned to Sagesse Club just a year later. Internationally, he represents the Lebanese national team, and he is a WABA (West Asian Basketball) champion from 2017. He graduated from the Lebanese Evangelical School for boys and girls L.E.S.