| Hasan Hüseyin Acar | |
| Birth Date: | 16 December 1994 |
| Birth Place: | Eskişehir, Turkey |
| Height: | 1.83 m |
| Position: | Midfielder |
| Currentclub: | Diyarbekirspor |
| Clubnumber: | 8 |
| Youthyears1: | 2007–2011 |
| Youthclubs1: | Eskişehirspor |
| Years1: | 2011–2018 |
| Clubs1: | Eskişehirspor |
| Caps1: | 66 |
| Goals1: | 16 |
| Years2: | 2015 |
| Clubs2: | → Göztepe (loan) |
| Caps2: | 13 |
| Goals2: | 1 |
| Years3: | 2016 |
| Clubs3: | → Tokatspor (loan) |
| Caps3: | 3 |
| Goals3: | 0 |
| Years4: | 2018–2020 |
| Clubs4: | Kayserispor |
| Caps4: | 48 |
| Goals4: | 6 |
| Years5: | 2021 |
| Clubs5: | Alanyaspor |
| Caps5: | 4 |
| Goals5: | 0 |
| Years6: | 2021–2022 |
| Clubs6: | Ankaragücü |
| Caps6: | 8 |
| Goals6: | 0 |
| Years7: | 2022–2023 |
| Clubs7: | Altınordu |
| Caps7: | 10 |
| Goals7: | 0 |
| Years8: | 2023 |
| Clubs8: | İskenderunspor |
| Caps8: | 15 |
| Goals8: | 3 |
| Years9: | 2023– |
| Clubs9: | Diyarbekirspor |
| Caps9: | 5 |
| Goals9: | 0 |
| Nationalyears1: | 2013 |
| Nationalteam1: | Turkey U20 |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 0 |
| Club-Update: | 23 September 2023 |
| Nationalteam-Update: | 21:05, 19 January 2014 (UTC) |
Hasan Hüseyin Acar (born 16 December 1994) is a Turkish footballer who plays as a midfielder for Diyarbekirspor.
He made his Süper Lig debut on 18 August 2013.[1]
On 11 June 2018, he signed a three-year contract with Kayserispor.[2]
On 31 August 2022, Acar signed a one-year deal with Altınordu.[3]