| István Bagi | |
| Birth Date: | 1989 3, df=yes |
| Birth Place: | Csongrád, Hungary |
| Currentclub: | SC Oberpullendorf |
| Position: | Defender |
| Years1: | 2004–2005 |
| Clubs1: | Csongrádi TSE |
| Caps1: | 10 |
| Goals1: | 0 |
| Years2: | 2005–2012 |
| Clubs2: | Kecskemét |
| Caps2: | 38 |
| Goals2: | 0 |
| Years3: | 2006–2008 |
| Clubs3: | → Csongrádi TSE (loan) |
| Caps3: | 38 |
| Goals3: | 4 |
| Years4: | 2011–2012 |
| Clubs4: | → Mezőkövesd (loan) |
| Caps4: | 28 |
| Goals4: | 1 |
| Years5: | 2012–2014 |
| Caps5: | 42 |
| Goals5: | 0 |
| Years6: | 2014–2017 |
| Caps6: | 74 |
| Goals6: | 7 |
| Years7: | 2016 |
| Clubs7: | → Kisvárda (loan) |
| Caps7: | 14 |
| Goals7: | 3 |
| Years8: | 2017–2022 |
| Clubs8: | Győri ETO |
| Caps8: | 143 |
| Goals8: | 11 |
| Years9: | 2022 |
| Clubs9: | Bruck/Leitha |
| Caps9: | 13 |
| Goals9: | 1 |
| Years10: | 2023– |
| Clubs10: | SC Oberpullendorf |
| Caps10: | 0 |
| Goals10: | 0 |
| Pcupdate: | 12 November 2022 |
István Bagi (born 23 March 1989) is a Hungarian football player who plays for Austrian club SC Oberpullendorf.