| Oleksiy Bykov | |
| Fullname: | Oleksiy Oleksiyovych Bykov |
| Birth Date: | 29 March 1998 |
| Birth Place: | Khartsyzk, Ukraine |
| Height: | 1.87 m[1] |
| Position: | Centre-back |
| Currentclub: | Zagłębie Sosnowiec |
| Clubnumber: | 2 |
| Youthyears1: | 2010–2015 |
| Youthclubs1: | Shakhtar Donetsk |
| Years1: | 2015–2016 |
| Clubs1: | Shakhtar Donetsk |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2016–2017 |
| Clubs2: | Oleksandriya |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2018– |
| Clubs3: | Mariupol |
| Caps3: | 61 |
| Goals3: | 0 |
| Years4: | 2021–2022 |
| Clubs4: | → Lokomotiv Plovdiv (loan) |
| Caps4: | 15 |
| Goals4: | 0 |
| Years5: | 2022 |
| Clubs5: | → KA (loan) |
| Caps5: | 8 |
| Goals5: | 0 |
| Years6: | 2022–2023 |
| Clubs6: | → Zagłębie Sosnowiec (loan) |
| Caps6: | 19 |
| Goals6: | 0 |
| Years7: | 2023– |
| Clubs7: | Zagłębie Sosnowiec |
| Caps7: | 20 |
| Goals7: | 2 |
| Nationalyears1: | 2018–2019 |
| Nationalteam1: | Ukraine U21 |
| Nationalcaps1: | 9 |
| Nationalgoals1: | 0 |
| Pcupdate: | 29 March 2024 |
| Upright: | 0.8 |
Oleksiy Oleksiyovych Bykov (Ukrainian: Олексій Олексійович Биков; born 29 March 1998) is a Ukrainian professional footballer who plays as a centre-back for Polish club Zagłębie Sosnowiec.
He made his Ukrainian Premier League debut for Mariupol on 18 March 2018 in a game against Shakhtar Donetsk.[2]
On 18 July 2022, he joined Polish I liga club Zagłębie Sosnowiec on a loan until the end of the season, with an option to buy.[3] He joined the club on a permanent basis on 4 July the following year, signing a one-year contract.[4] In April 2024, he underwent a ligament reconstruction procedure after suffering a PCL injury.[5] In spite of this, and the club's relegation to the third division, Bykov's contract was extended for another year on 15 June 2024.[6]