| Mehmet Ali Büyüksayar | |
| Height: | 1.66m |
| Birth Date: | 8 May 2004 |
| Birth Place: | Meram, Turkey |
| Position: | Winger |
| Currentclub: | Ümraniyespor (on loan from Konyaspor) |
| Clubnumber: | 24 |
| Youthyears1: | 2016–2021 |
| Youthclubs1: | Konyaspor |
| Years1: | 2021– |
| Clubs1: | Konyaspor |
| Caps1: | 9 |
| Goals1: | 0 |
| Years2: | 2021–2022 |
| Clubs2: | → 1922 Konyaspor (loan) |
| Caps2: | 31 |
| Goals2: | 2 |
| Years3: | 2024– |
| Clubs3: | → Ümraniyespor (loan) |
| Caps3: | 2 |
| Goals3: | 1 |
| Nationalyears1: | 2022 |
| Nationalteam1: | Turkey U18 |
| Nationalcaps1: | 7 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 2022– |
| Nationalteam2: | Turkey U19 |
| Nationalcaps2: | 5 |
| Nationalgoals2: | 0 |
| Pcupdate: | 19 August 2024 |
| Ntupdate: | 18:54, 28 February 2023 (UTC) |
Mehmet Ali Büyüksayar (born 8 May 2004) is a Turkish football player who plays as a winger for Ümraniyespor, on loan from Süper Lig club Konyaspor.
A youth product of Konyaspor, Büyüksayar signed his first professional contract with the club on 26 February 2021 until 2023, and was shortly after loaned to 1922 Konyaspor for a season and half in the TFF Second League.[1] He returned to Konyaspor for the 2022–23 season, and made his professional debut with them in a 3-2 Turkish Cup win over Bodrumspor on 22 December 2022.[2] On 24 February 2023 he extended his contract with Konyaspor until 2026 and was promoted to their senior team.[3]
Büyüksayar is a youth international for Turkey. He represented the Turkey U18s at the 2022 Mediterranean Games.[4]