Bartosz Mrozek (born 23 February 2000) is a Polish professional footballer who plays as a goalkeeper for Ekstraklasa club Lech Poznań.

In 2017, he trialed at English club Manchester United and drew interest from Crystal Palace, before making his first senior appearances for Lech's reserve team that year.

[4] He made his Ekstraklasa debut three days later, on 15 May 2022, in a 1–1 home draw against Śląsk Wrocław which secured his team's survival from relegation.

After Stal made use of their buy option at the end of the season, Lech immediately exercised their buy-back clause to bring Mrozek back to the club on a new three-year deal.

[8][9] Having started the 2023–24 campaign as back-up to Filip Bednarek, Mrozek eventually earned a regular spot in Lech's line-up.