| Orhan Aydın | |
| Height Ft: | 6 |
| Height In: | 8 |
| Weight Lbs: | 231 |
| Position: | Power forward |
| Birth Date: | 1 October 1989 |
| Birth Place: | Baku, Azerbaijan |
| Team: | Free Agent |
| Nationality: | Azerbaijani / Turkish |
| Draft Year: | 2011 |
| Career Start: | 2005 |
| Years1: | 2005–2009 |
| Team1: | Pertevniyal |
| Years2: | 2009–2010 |
| Team2: | Darüşşafaka |
| Years3: | 2010 |
| Team3: | Pertevniyal |
| Years4: | 2010–2011 |
| Team4: | Türk Telekom |
| Years5: | 2011–2013 |
| Team5: | Aliağa Petkim |
| Years6: | 2013–2015 |
| Team6: | Uşak Sportif |
| Years7: | 2015–2016 |
| Team7: | Acıbadem Üniversitesi |
| Years8: | 2016–2017 |
| Team8: | Galatasaray |
| Years9: | 2017–2022 |
| Team9: | Gaziantep |
| Years10: | 2022–2024 |
| Team10: | Semt77 Yalovaspor |
Orhan Aydın Hacıyev (born 1 October 1989) is an Azerbaijani professional basketball player who last played for Semt77 Yalovaspor of the Turkish Basketball First League. He plays the power forward position. He is 2.03 m tall. He is member of Azerbaijan national basketball team. He also holds a Turkish citizenship.