| Alfonso Nieto | |
| Fullname: | José Alfonso Nieto Martínez |
| Birth Date: | 30 October 1991 |
| Birth Place: | Mexico City, Mexico |
| Height: | 1.77 m[1] |
| Position: | Forward |
| Youthyears1: | 2008–2010 |
| Youthclubs1: | Pumas UNAM |
| Years1: | 2010–2016 |
| Clubs1: | Pumas UNAM |
| Caps1: | 38 |
| Goals1: | 1 |
| Years2: | 2017 |
| Clubs2: | → Herediano (loan) |
| Caps2: | 15 |
| Goals2: | 3 |
| Years3: | 2018 |
| Clubs3: | Carabobo FC |
| Caps3: | 13 |
| Goals3: | 0 |
| Years4: | 2020 |
| Clubs4: | Toros Neza |
| Years5: | 2021 |
| Clubs5: | Deportivo Coatepeque |
| Years6: | 2022 |
| Clubs6: | Halcones de Querétaro |
| Years7: | 2023 |
| Clubs7: | Toros Neza |
| Pcupdate: | 20 January 2021 |
| Managerclubs1: | Inter Playa del Carmen (assistant) |
| Manageryears1: | 2019–2020 |
José Alfonso Nieto Martínez (born 30 October 1991) is a former Mexican footballer, who last played as a forward for Deportivo Coatepeque.