| Kostyantyn Bychek | |
| Fullname: | Kostyantyn Romanovych Bychek |
| Birth Date: | 2000 4, df=yes |
| Birth Place: | Bila Tserkva, Ukraine |
| Height: | 1.78 m |
| Position: | Attacking midfielder |
| Currentclub: | Obolon Kyiv |
| Youthyears1: | 2013–2014 |
| Youthclubs1: | KOK DYuSSh Irpin |
| Youthyears2: | 2014–2017 |
| Youthclubs2: | KODYuSSh Shchaslyve |
| Youthyears3: | 2017 |
| Years1: | 2017–2019 |
| Clubs1: | Olimpik Donetsk |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2019–2021 |
| Clubs2: | Karpaty Lviv |
| Caps2: | 11 |
| Goals2: | 3 |
| Years3: | 2021–2022 |
| Clubs3: | Nyva Ternopil |
| Caps3: | 18 |
| Goals3: | 3 |
| Years4: | 2022–2024 |
| Caps4: | 39 |
| Goals4: | 2 |
| Years5: | 2024– |
| Clubs5: | Obolon Kyiv |
| Caps5: | 0 |
| Goals5: | 0 |
| Pcupdate: | 2 July 2024 |
Kostyantyn Romanovych Bychek (Костянтин Романович Бичек; born 21 April 2000) is a Ukrainian professional footballer who plays as an attacking midfielder for Ukrainian club Obolon Kyiv.[1]