Sebastian Szymański (born 10 May 1999) is a Polish professional footballer who plays as an attacking midfielder or a winger for Süper Lig club Fenerbahçe and the Poland national team.

[2] In July 2016, Szymański was promoted to the first team and debuted on the seventh day in a 1–4 loss to Lech Poznań in the Polish Super Cup final.

[15] On 12 July 2023, Turkish Süper Lig side Fenerbahçe announced the signing of Szymański on a four-year contract, for €9.75 million.

[16][17] On 26 July 2023, he scored his first goal in his debut in UEFA Conference League against Zimbru at the Şükrü Saracoğlu Stadium, Fenerbahçe won 5–0.

[22] On 9 September 2019, Szymański debuted for the senior Polish squad by replacing Kamil Grosicki in the 70th minute during a UEFA Euro 2020 qualifying match against Austria.

[23] He started for the first time in the same qualification on 10 October against Latvia and assisted on one of the goals, resulting in a 3-0 victory for Poland that secured their final tournament spot.