| Mateusz Szczepaniak | |
| Birth Date: | 2007 1, df=yes |
| Position: | Midfielder |
| Currentclub: | Legia Warsaw |
| Clubnumber: | 71 |
| Youthyears1: | –2021 |
| Youthclubs1: | ŁSR Łuków |
| Youthyears2: | 2021–2022 |
| Youthclubs2: | Legia Warsaw |
| Years1: | 2024– |
| Caps1: | 2 |
| Goals1: | 0 |
| Clubs1: | Legia Warsaw |
| Nationalyears1: | 2023– |
| Nationalteam1: | Poland U17 |
| Nationalcaps1: | 12 |
| Nationalgoals1: | 3 |
| Nationalyears2: | 2024– |
| Nationalteam2: | Poland U18 |
| Nationalcaps2: | 6 |
| Nationalgoals2: | 0 |
| Club-Update: | 30 November 2024 |
| Nationalteam-Update: | 30 November 2024 |
Mateusz Szczepaniak (born 5 January 2007) is a Polish footballer who plays as a midfielder for Legia Warsaw.[1]
Szczepaniak began his youth career at ŁSR Łuków before joining Legia Warsaw's academy. In the 2023–24 season, he achieved the runner-up position in the Central Junior League U-17. He played the full 90 minutes in both legs of the final against Śląsk Wrocław, contributing to a 3–2 away victory in the first leg on 8 June 2024, where he received a yellow card,[2] and a 2–4 home defeat in the second leg on 12 June 2024.[3]
He debuted for Legia's senior team during the 2024–25 season in a match against Caernarfon Town on 25 July 2024.[4] His first Ekstraklasa appearance came on 3 November 2024, in a 2–1 win over Widzew Łódź, entering in the 90th minute.[5] On 28 November 2024, he scored his first goal for the club in a 3–0 win over Omonia Nicosia during the league phase of the 2024–25 UEFA Conference League, becoming the youngest scorer in the competition's history.[6]