Miłosz Stefan Mleczko (born 1 March 1999) is a Polish professional footballer who plays as a goalkeeper for I liga club Bruk-Bet Termalica Nieciecza.

[2] On 30 January 2023, after spending nearly nine years at Lech, it was announced he would be leaving the club with immediate effect after terminating his contract by mutual consent.

[3] On 20 February 2023, Mleczko joined I liga side Znicz Pruszków.

[4] On 15 June 2024, he moved on a free transfer to fellow second-tier club Bruk-Bet Termalica Nieciecza.

This biographical article related to a Polish association football goalkeeper is a stub.