| Oleksandr Martynyuk | |
| Fullname: | Oleksandr Andriyovych Martynyuk |
| Birth Date: | 2001 11, df=yes |
| Birth Place: | Dubno, Rivne Oblast, Ukraine |
| Height: | 1.75 m |
| Position: | Left back |
| Currentclub: | FC Oleksandriya |
| Clubnumber: | 24 |
| Youthyears1: | 2014–2018 |
| Youthclubs1: | VIK-Volyn Volodymyr-Volynskyi |
| Years1: | 2017–2018 |
| Clubs1: | DYuSSh-VIK Volodymyr-Volynskyi (amateurs) |
| Caps1: | 1 |
| Goals1: | 1 |
| Years2: | 2018–2022 |
| Clubs2: | Volyn Lutsk |
| Caps2: | 38 |
| Goals2: | 0 |
| Years3: | 2020 |
| Clubs3: | → Volyn-2 Lutsk |
| Caps3: | 7 |
| Goals3: | 0 |
| Years4: | 2022– |
| Caps4: | 19 |
| Goals4: | 0 |
| Nationalyears1: | 2024 |
| Nationalcaps1: | 10 |
| Nationalgoals1: | 1 |
| Pcupdate: | 14 July 2024 |
| Ntupdate: | 30 July 2024 |
Oleksandr Andriyovych Martynyuk (Ukrainian: Олександр Андрійович Мартинюк; born 25 November 2001) is a Ukrainian professional footballer who plays as a left back for Ukrainian club FC Oleksandriya.[1]