| Onur Ergün | |
| Birth Date: | 15 November 1992 |
| Birth Place: | Bingöl, Turkey |
| Height: | 1.85m |
| Position: | Midfielder |
| Currentclub: | İstanbul Başakşehir |
| Clubnumber: | 4 |
| Youthyears1: | 2003–2005 |
| Youthclubs1: | Karşıyaka Belediyespor |
| Youthyears2: | 2005–2007 |
| Youthclubs2: | Karşıyaka |
| Youthyears3: | 2007–2008 |
| Youthclubs3: | Karşıyaka Belediyespor |
| Years1: | 2008–2011 |
| Clubs1: | Menemenspor |
| Caps1: | 5 |
| Goals1: | 0 |
| Years2: | 2011–2012 |
| Clubs2: | Çiğli Belediyespor |
| Caps2: | 12 |
| Goals2: | 1 |
| Years3: | 2012–2013 |
| Clubs3: | 1928 Bucaspor |
| Caps3: | 23 |
| Goals3: | 4 |
| Years4: | 2011–2021 |
| Clubs4: | İstanbulspor |
| Caps4: | 242 |
| Goals4: | 44 |
| Years5: | 2021–2023 |
| Clubs5: | Hatayspor |
| Caps5: | 44 |
| Goals5: | 2 |
| Years6: | 2023 |
| Clubs6: | → İstanbulspor (loan) |
| Caps6: | 10 |
| Goals6: | 1 |
| Years7: | 2023– |
| Caps7: | 19 |
| Goals7: | 0 |
| Pcupdate: | 22 June 2024 |
Onur Ergün (born 15 November 1992) is a Turkish professional footballer who plays as a midfielder for İstanbul Başakşehir.
A youth product of Karşıyaka Belediyespor and Karşıyaka, Ergün begun his senior career with Menemenspor in 2008. He had stints with the semi-pro clubs Çiğli Belediyespor and 1928 Bucaspor from 2011 to 2013. In 2013, he transferred to İstanbulspor where he became the captain for 8 years, and helped the team get promoted into the TFF Second League and eventually the TFF First League. After his contract expired, he signed with Hatayspor on 15 July 2021.[1] He made his professional debut with Hatayspor in a 1–1 Süper Lig tie with Kasımpaşa on 14 August 2021.[2]
On August 25, 2023, he signed with İstanbul Başakşehir.[3]